I think he's cheating. But how do I know for sure

Here's the thing, my boyfriend and I have been dating for a little more than seven months now. We've both been away on vacation with our familys' for a while. He has been gone almost four weeks and I've been gone one. He got home about four days ago and him and I have finally been able to talk on the phone. He's been giving me certain times I can and cant call, I called at two and he said it was too early. I asked if he was still sleeping and he told me no I just called to early and to call him in an hour. He said it kind of quietly and didnt say I love you or anything. He's also been talking to alot of other girls. We'll joke around and stuff and I'll say ';dont do anything, cause I'll find out if you do'; and he says ';oh yeah, how?'; but he isnt joking. He knows he could probably get away with cheating I just dont want to think and cant tell if he is. What are some signs and what can I do?I think he's cheating. But how do I know for sure
I would ask him why he's acting so differently from before he went away. Tell him you just don't understand it %26amp; that you're really beginning to wonder the reasoning behind it. When people act quite a bit differently, it's usually for a reason %26amp; I think, even tho I hate to say it, that you're on the rite track. Why would he all of a sudden ask you to call at a different time when he never did this before. But when people cheat, they give themselves away, because they are different from the way you knew them to be, %26amp; this is just a sign of it. Any difference in behavior is usually a good sign of cheating or that they're at least doing something they don't want you to know they're doing. He is plainly showing you signs of acting different that you knew him to be before you were seperated for that short period of time. I feel he does at least owe you an explination of some kind. Just by telling you to call at a different time, %26amp; not saying he loved you, if he did before, tells me there was someone there he didn't want to take a chance of ';distrubing'; the moment so to speak. I do wish you the best...:)I think he's cheating. But how do I know for sure
well by what you said..it sounds like he is cheating...i say you do the same he is doing or act the same way....
i think he is cheating and if he isn't it sounds like he doesn't want to be you ! sorry but it sounds like that!
seeing is believing that's all i can say if you see him actually kissing and doing other things then yea you know for sure and those things you've just said are some signs and then you can also tell by the way a guy acts like he will like start accusing you of doing things when they're in the wrong,but if is all you can do is leave or stay and forgive and live with insecurity it up to you hopes this helps%26gt;..!...)
Well he'll start changing and he'll lose interest in talking to u. You'll know, just listen to ur intuision. If i were u and i truly believe he's cheating i'll dump his a$$. My last BF changed and he started actin like he was a mack daddy and was talking to other girsl, so i dump he's a$$. That guy was on my a$$ trying to get me back everytime we ran into each other or on the cell, i changed my # and told him i don't sweat guys and don't put up w/ sh*t. Let ur bf know that or let him go, if u feel u can't trust him, then maybe u both shouldn't be together.

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