How can you tell if he ejaculates?
When a guy ejaculates (comes), a sticky liquid called semen comes out of his penis. It’s usually pretty easy to tell when a guy ejaculates, since you can usually see the semen. But if, for example, you’re having vaginal sex, it might be a bit harder to tell whether he’s ejaculated.
You can always ask him if he ejaculated/came/had an orgasm. Communicating about sex — before, during, and after — helps both of you understand what the other one likes and doesn’t like, which can make sex better and strengthen your relationship.
And while we’re on the subject of ejaculating, don’t forget that condoms are a great way to protect against pregnancy and STDs. Read more about condoms.