My boyfriend, who is 20, occasionally loses his erection during sex, and I’m 20 as well. I want to address this with him because I don’t want him to feel embarrassed.

Hey everyone! This is my first post on Reddit, and I'm feeling a bit lost about something, so I thought I’d reach out for advice. I've been with my boyfriend for two years, and our relationship overall is wonderful. However, I've recently noticed something odd—during our morning intimacy, he sometimes loses his erection unexpectedly. What confuses me is that he's usually the one who starts things, so I assume he’s interested. Yet, at some point, he goes soft. This doesn’t seem to happen at night or during other times, just mainly in the mornings. I haven't mentioned it to him yet because I don’t want to make him feel bad, but I'm curious about what's going on. Is this a common issue? Could there be a physical reason behind it, or might it relate to stress? I'd really value any insights from those who have been through something similar or any advice on how to address this without making him feel uncomfortable. Thanks!