I've been with my bf going on 3 years now. He's the most caring partner I've had, has his own issues w mental health so he is more understanding than other ppl I've dated. We're long distance over the summer while he's working but we usually live together. 

Every time we are apart my mind starts to wander. If he doesn't answer my texts when I know he isn't busy working I start assuming he's doing something more enjoyable or found someone better. We did have an issue with him crossing boundaries w other women about a year ago, so I have been hypervigilant ever since. I do my best not to snoop on him. If he misses my calls I sometimes call him excessively until he answers. I am always suspicious of him. Last night he had a night off, I asked him if he was going out and he just didn't answer until 11:30 when he said he was going home. He didn't call me like we've agreed to do while he's away. Just not sure how I'm ever going to be able to be alone while he's away or not think something sinister is going on.