Give in or get out? potential relationship question?

I broke up with my last bf a while back, been trying to get over it all and what not. One of my friends has shown interest in me and has bluntly said he likes me and when I’m ready he wants to ask me out. I’m honestly not sure if I want to get into anything serious right now, however lately I’ve been starting to like him a lot. Only thing I’m concern about is our mutual friend Katrina. She’s a really sweet and awesome person and I’ve noticed Eric (friend who has said he likes me) has been showing interest in her. She currently is dating one of my friends but has said she’s going to be breaking up with him. Eric was talking about it last night and was saying how she deserves to be with someone really good. I asked him if he likes her, he said he does a little bit and he could see himself with her but he’s not going to try anything especially when she has a bf. It kinda set me back on perusing anything with him. I mentioned that to him as well and he said he’s still going to wait for a chance with me, but it’s like.. Um. should I even try when he’s already showing interest in someone else? I’ve told him I do like him, but right now I can’t get with anyone. Last breakup was really rough and bad and I need time to get over it before I can start anything new. I can’t expect him to only pick me or something, I understand that. I’m just a little concern at letting myself start growing any attachment or feelings for him if he’s already saying he likes someone else