Sterile?

Hi girls. My bf told me the other day he thinks he could be sterile, because he had been strongly hit on his testicles twice, when he was in high school.

I’ve been googling but haven’t found a concrete answer from a trustable site... so I decided to come to you. In your experience and knowledge, do you think that’s really a cause for men to become sterile?

Before you ask, we’re both 23 and been together for a year, but we’ve never had sex, I’m actually still a virgin. So no, we haven’t had any pregnancy scares, lol

We plan on getting married in the future and form a family, but I’m just concerned about that issue, cause I really want him to be the father of my children.

Sorry for the long post, thanks for your help. Have a happy NYE!😊✨🥂