Why do I keep imagining him cheating on me when I know he isn't?

Because you don't trust him completely. You imagine a situation just to prepare yourself for cheating and if that happens you already know how it feels and what to do.

This is not you, this your insecurity speaking. When you know that he loves you and would never do such a thing to you, have faith. You can spend more time with him, do more things together..Build your trust in him.

Because you like him so much, you don't want to lose him, and these negative thoughts invade your brain and get in the way of things :(

In my personal experience, I have thought that same thing. It's when he starts acting a little out of the ordinary and I automatically assume the worst. I suggest being open and honest about it and speaking to him about it.

It is most likely because you do not trust him completely. It could be based on past experiences or even because you feel self conscious about your worth.

Perhaps because you aren't getting the attention you once did from him and have come to that conclusion

Sometimes, we end up thinking the worst when we don't need to. Everyone has times where they worry. Just remind yourself that you know he isn't cheating and remember that communication is key to any relationship. If something is bothering you, don't be afraid to talk about it. Thanks for coming to 7 Cups! That's a big, brave step right there. :)

Let me start by saying that is a fantastic and frequently asked question. There are several things that could factor into this one, everyone is different and every relationship is different. Maybe it has to do with a bad previous experience you had, or maybe you are feeling a little self-conscious lately. Whatever the reason, this is perfectly normal. The fact that you're asking this question proves what a caring girlfriend you clearly are. Our minds often tend to look for negative things more so than positive. I and thousands of others can relate to this feeling as well. When I find myself getting jealous or paranoid, I try to stay as distracted as possible by cleaning the house or venting to a friend. Usually by the time I've finished cleaning or venting I feel so much better, I don't build up resentment towards my boyfriend or waste the day being unhappy.

Fears sometimes come from within us - maybe there's some issues with self-confidence and your sense of self-value which cause you to create these hurtful imaginary situations.

There can be a lot of reasons for feeling this way. At the core of this issue is probably a certain lack of trust in the relationship. Also, if you keep feeling that he is cheating it might be due to a lack of self esteem on your part. if you don't feel like you are worthy of him, then your mind might automatically assume that he's cheating. You should sit and really introspectively investigate the root of these feelings. :)