I felt sad, and I don't know why
I was at a party, and I was having a great time there with my boyfriend, and my friends. And later on, my boyfriend and I were making out, which was ok. But after like 30 seconds, I had to stop because I was feeling really sad. I don't know what I was to be sad about, I wasn't cheating on him, never have, never will. I don't like anyone else, I love him, madly. But I'm just confused now because I have no idea why I felt sad.
If the sadness is brief and goes away it sounds minor. If the sadness remains or occurs frequently, it is best to speak to a doctor and get their opinion. The cause for the sadness could be one of an endless list of things, bodily or relationship related.