<human>: Could you distill the essence of the text into 1-3 sentences?

I have been with my boyfriend for about 4 months now and we fell in love really quickly. 

Since we met, he's been completely devoted to me. Loving and caring, he always said it was the best relationship he had. We would put in Netflix on with intentions of watching a movie and completely miss the whole thing because we're talking about something silly.

Recently, he's gotten a promotion at his job that has a lot riding on him and he's been really stressed out. On top of that has grandfather has passed away which he was conflicted about, he said it was because his grandpa was an asshole growing up. I tried to talk to him about his grandpa and about his feeling about it but he didn't seem comfortable talking about it for too long so I let it go. In general, he's been a little emotionally distant.

This weekend we got in a couple tiffs and its been stressful. We hadn't seen it other in a couple days and we were feeling distant. I guess I was just feeling insecure in our relationship. I realized I was overwhelming him with relationship problems on top of all the other stuff he had on his mind and I feel really terrible. 

He has a bit of anxiety when theres too much pressure going on and he shuts down. He's shutting down on me now, he's convinced that after we begin fighting then its all down hill in a relationship and we're going to fight all the time like with his ex, he thinks he's going to let me down with his work schedule all the time, he feels distant... just a lot. I think he's hit a wall and he's confused and conflicted about thinking we should break up.

I feel so terrible, I blame myself for not being stronger and letting my insecurities take control of me. I don't want to lose him. We haven't seen each other in person yet and I am going to see him tonight. What can I do to ease his mind about us and remind him that we're worth it?
<bot>: My boyfriends going through a lot right now and I made it harder, now he thinks he might want to break up and I want to remind him how we are worth being together.