Why didn't he let me see his phone?

two weeks ago i asked my boyfriend phone so i can check where mine was. he refused at first then waited a little and gave it to me after. we use each other phones to do things sometimes. we even take it to play games on it. why is it that this particular time he refused to do it

Additional Details
we was watching a show about cheating men who don't let their girlfriend see their phone that's how i remember that time. So i asked him and he told me he just didn't feel like giving me his phone. i kept asking he was saying the same thing. "i didn't feel like, i didn't wanted to". but now he gives me his phone. was he playing?

did he wanted to make me doubt for fun?

Who knows? Do you have any reason to mistrust him? If not then I would say he is probably just mucking around, he did give it to you after a while.

Did he have the phone privately for any amount of time before he gave it to you? And by that I mean - did he have a chance to delete suspicious things before he gave it to you? If so, he may have had something to hide. Or perhaps he was just mucking around. Who knows...

trust unless you have been giving real reasons not too.

Yep, he's obviously cheating - how the hell can we know?

no he didn't get the time to delete anything he was just holding as he didn't wanted me to see it then gave it after?

how knows,maybe he thought you wanted to go thru it. think of it on his end. i myself...if i not feeling like adding a number or somthing i give it to her, i dont care if she looks either, has she...who knows, i really dont mind. nothing to hide here and im on her plan so im sure she can see al history anyway with out even looking at it. i like it that way.

Dnt think about it too much otherwise it will cause both of you problems.