Ex boyfriend's friend

I live in the same house as my ex boyfriend. We have been through a lot and as of two weeks ago we have been on some sort of a break, if that's what you call it. Giving each other space, and time to think. Neither of us have anywhere else to go.

My Problem:

Me and my ex boyfriend have a mutal guy friend. I meet him through my boyfriend, so they knew each other first. Well I've always really just liked him as a person. We have a lot of similar interest and have always been able to vibe and have good conversation. He is very handsome and I've always thought that.  His house is the chill spot for all my friends, so these past few weeks I've been hanging out a lot over there to get out the house. I've started to develop a crush on him and I feel so guilty. Guilty because things are up in the air with me and my ex and guilty because this is also his friend. I'm not planning on doing anything with the friend. I don't think this would be the right way. I have a lot of things I need to figure out in my life before jumping into that. My problem is though is it okay for me to keep hanging out with him? He is a cool guy and a god friend, but I don't want to make my life more complicated than it already is.