How to approach a network contact that you have not contacted in about two months?

I am just genuinely trying to follow up with the contact (an analyst at a bank I'll be interning this summer). Do I just simply e-mail and ask how he's doing and take it from there or is there a better approach. I don't really want to ask for anything in particular since I've talked with him and asked questions before. I guess I just want to continue showing my appreciation and let him know I didn't take his help and forgot about him.

I appreciate the help.