Relationship advice

So I broke up with bf on Monday and we were together for a year and about 3 months and there's this guy who I was friends with for a little over a year too and all his guy friends are like when are you going to ask her out, but they like to mess around but I think some of them are serious too. And I think that for a few months I liked my guy friend already just I couldn't admit it cuz I was already in a relationship but now I'm not. And he's so clueless and I don't want to tell him and then ruin things cuz idk if we are just best friends or if I see him as more. And I don't want to rush things like I did with my ex (which was the only relationship I had). Any advice would be great!