My boyfreind works out of town and he is not here all the time and when he is out of town it is hard to know what he is doing and sometimes when I talk to him he is not in a good mood what should I think
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You should think about other things. If you think you need to know what he's doing all the time, I'm not surprised he's not always in a good mood. If you really can't trust him, then your relationship has bigger problems than his out-of-town job.

Tell your boyfriend how you feel , if need be wait until he is in a nice mood ( if you like) .If he doesn't take your feeling into account then I am afraid you will have to consider where you are going .Also with him being away a lot he maybe miserable in his job being far away from you could do that to him if so make time so that you can spend time together , a cosy night in whatever way it is you do it , I hope that this helps , but if you really don't trust him then perhaps there isn't any point being together or like " ordinary guy" says you have bigger more personal problems to deal with .

Keep in touch on your dilemma