FWB good or bad idea?

I dated this guy for like 1.5 months, and then broke up. He's been super flirty and I've flirted back, it's that sort of friendship. Anyways he's sent me shirtless photos as friends but then he showed me a dick pic. In class he'lI sit close and rest his hand on my leg. I think he wants to be fuck buddies, what do you think? It's also super weird bc he'll try to hold my hand and put his arm around me, hug me etc. This is a lil weird for fwb..