How do I know if he is cheattin or now?

Me and my boyfriend have been together for about 6 or 7 months now… I don’t believe that he is cheattin but you can never be sure about these things now… But he is a mommas boy and he loves his family a lot… Well in aug. We moved about 25-30 miles from his mom and now for about the past 2 months he has been wantin to go to his moms a lot… He is the type of person where he can’t lie to you about anything cause he will end up tellin u… I really don’t think he is cheattin and I’ve asked him time after time if he is and its always no… He calls me every day or every other day… I guess what my questions are (1) how can I tell is he is cheattin on me or not with out the things I said above? (2) also how can I make things between us stronger then they are? I would really like anyones help cause I think I’m fallin in love with him!!! Please!!! Thanks!!!