Toxic boss in M&A Boutique: get bonus and run or jump ship immediately?

Hi there,

I am 21 years old who has just finished their undergraduate studies and had always had in my mind to jump ship to a better firm as soon as the opportunity arises. However, the boss and the person in question who hired me, has been highly manipulative from the start, including delaying my start date for 4 months, when I started it has been non-stop abuse such as belittling, getting in mine and 2 newer colleagues faces also and calling me various swear names, insults, putting down my work ethic despite, him telling me I am a high performer and before I starting that I will be the best out of all the new hires and maybe even soon, in a few years that most brokers. He promised huge bonuses for deals I bring in, think 25% commission, however at time I begin to question whether he will even pay me, every month when he pays me my lower salary (which he justified by saying "because you'll get a higher bonus you can have a hard-to-live-off salary") he doesn't pay you unless you asking him, then will message you on your weekend after he finally paid you and you've taken on the mountains of abuse with him saying "why should I pay you, you should have already set up 10 deals worth 1m in fees within your first 2 months), he will threaten me stating "You are so rude for not saying thank you for me paying your salary" and then go on to bang on about how I'm being ungrateful and essentially threatening me. He does this every month or pay day, sometimes I get paid every two weeks and this happens. He will even do this at 2am when I was with my girlfriend or at 11pm on Saturday night with my girlfriend (send me lengthy texts moaning about work), and until I say thank-you, he will say "I won't send you your salary until you say please etc.". He will send you very personal text messages all the time, call you frequently 10-20 times out of work hours to chat to me, it makes me incredibly, incredibly uncomfortable. My girlfriend at the time thought he must of been gay or something.

I am still at this firm, and I have had enough, I had been told I should get a good 100k bonus for one of my deals that's beginning to go in the loop. But he just acts so toxic and his working practices is so dodgy (he has no degree and says I wasted my time getting one) and regularly tells me/others to do things in the least effective way when speaking to clients, in order to make us sound dumb, and to big up his name to clients and put us down like we did none of them work. I am unsure whether to stick around for that bonus or join another firm. It has completely and utterly started to take a toll on my personal life, friendships, relationships, family life, physical health- lack of sleep, heart palpitations and also mental health, severe stress and he is attempting to diminish my self-esteem completely. He often try to belittle me in-front of the other two colleagues, and call me names and belittle me on firm-wide emails. He knows I need this job for the money and because I want the bonus, so he thinks he's "got me hooked" and that I'll stay through anything to get that bonus. Is it worth it, and I know for a fact that other firms aren't like this. He also bullied another colleague out before me and also all three of us still at the firm were in personal relationships before we started at the firm, we all now, after dealing with his shit and being around him and the business, have all seen our relationships end, all three of us had been left by our significant other, all, it appears due the the same thing: belittlement, too much stress, feeling physically unwell, demotivated, and many others which you can gather from the above story. Also, he threatened to kick me out of the job and not pay me any of my bonuses, unless I deleted all of the toxic text and WhatsApp messages/calls he has sent to me over the last 4-8 months, where he incidentally called me a c**t about 30 times and almost got physically aggressive to me, this is also on my personal phone as well.

So my question to you guys is-- Is staying for a 100k bonus then leaving a good idea, or shall I try to get into another firm as quick as possible to save my mental and physical sanity. I have even considered smoking pot/psychedelics to deal with the abuse.

Appreciate any honest thoughts, especially if possible weighed up the benefits of gaining the 100k in first year out of university, compared to the mountain of shit I have had to deal with in 4 months of working at the firm, then 4 months where I signed the contract and was supposed to work on set date and he postponed it each week for 4 months and even then, tried to knock my self-esteem, motivation and drive. I am still fighting through this and am looking at this as if I am a prisoner of war surviving through whatever is thrown at me. I am also saddened by my loss of my relationship with my girlfriend, which I am 100% convinced wouldn't had happened if I wasn't so battered, bruised and self-esteem blown by this shocking experience. I have this potential PE Analyst opportunity at this REPE start-up: Lower pay and no bonus, but healthy and progression and learning?

Look forward to any thoughts, I truly appreciate your help.

Thanks a lot.

A