What is he likes me but flirts with others?

It's possible that the person may be interested in you but is also enjoying flirting with others. This doesn't necessarily mean they are not serious about you or that they are playing games. It could be that they simply enjoy flirting and don't see it as a threat to their feelings for you. However, it's important to communicate with them about your concerns and expectations in the relationship. It's important to set boundaries and make sure that both parties are on the same page. If their behavior continues to make you uncomfortable, it may be worth reconsidering the relationship.