He did.

Did you read the fml, bro?

To be fair, "after he had a bad day at work" would've been more clear. But it is pretty obvious.

thanks #2 Capt Obvious ... where would we be without your vast knowledge of this FML?

I disagree, I am very (admittedly) jealous. I am 100% loyal to my girlfriend but somewhere along the line of my life picked up trust issues

I am not saying that one have to have such a secret to get jealous, I am just saying that if you do, you tend to react stronger on such trivial things that might imply interest in another person than your partner. No matter how small they might be, maybe even completely unrelated, but you draw the lines to early, to protect your own secret by blaming your partner for interest in another person.

Also, it takes one to know one. If you've cheated, you know the signs of cheating. Not that jealousy is always a sign of the other person having a secret, but sometimes it can be.

Same

i agree, #4, I've had many cheating partners, so i get jealous, but I've never cheated

By the looks of it, I don't think OP and her boyfriend ended up playing any music

And by music I meant sex. I'm sorry for my terrible joke i'll go now