What should I do to solve this with him?

I feel so stupid & it is stupid :/ I’ve started meeting up with my ex & I thought things were going really well. On Sunday he went to Amsterdam with friends..came back today. He came on fb earlier so I was like : ‘you back?’ & he just put: ‘yup’ so I just put a :) & then he went offline..15mins later ish he came back on..so I thought I’d bite my tounge & put: ‘good time then?’ 2mins later he was off again..& he came back on again but I didnt say anything but he went off again anyway & im actually really annoyed that he cant even say bye & it just proves the control he has over me which I thought was gone, but I’m so hung up about. So I thought maybe he’d gone back to his friends, so I rang him (141) to see if I could hear his friends in the background or anything, but im sure it sounded like he was in bed or maybe he was drunk or both. But I just need to talk to him and stupidly I’m worried about him and us. But then apart of me Is like ‘yeahh his probs in bed because his been having it on with so many prostitutes that his soo tired.’ Which yes, I know is harsh. So yeah, I don’t really know what to do, I want to text him..but ideally it’d be nice if he came on msn, but I highly doubt it..any suggestions? Also if anyone suggests that I do text him..i’m not sure what I could put..