My boyfriend is on a dating site
If you think it’s okay for you to look for someone new but aren’t okay with your partner doing so, that isn’t really fair.
You can’t control your partner’s actions; you can only control your own.
Did you go through your partner’s phone or their computer to see what they were doing?
Going through a partner’s personal technology without their permission, even in a committed relationship (even if you’re suspicious), is unhealthy, since everyone deserves to have digital privacy.
If you make this discovery, it can help to have a chat with your partner about what the boundaries of the relationship are or should be.
If you haven’t already defined the terms of your relationship, this might be a sign that it’s time to have that conversation.