Is he actually interested in me?

I hooked up with a guy last weekend on Sat, very drunk but we both had fun. He has fancied me for a good few years now. I didn't have my phone on me so I added him on fb. He sent me a message on Monday asking me how my weekend was etc and other small talk. In the end I said heres my number its easier so he text me again a few times. I asked him if he wanted to meet up and he said a group of them were going out on friday night if i wanted to come along as he was bust till then. i do kinda know all of them. and i asked him to be discreet as they gossip and he hasnt told anyone yet. but shouldnt he have asked me first, and why some group thing? sounds kinda lazy to me as opposed to a proper date, esp as he has always had a thing for me. he also didnt text me at all yesterday which annoyed me. obv i shouldnt have jumped into bed with him but its done now. I'm thinking weather not to go and see if he wants to meet one to one? Or would it be ok to go? I dont just wanna be some drunken booty call. I'm 26 he is 31 so we are not young. But he seems to have an awful relationship track record, a real commitment phobe