What is he says he loves me but flirts with others?

If someone says they love you but flirts with other people, it could indicate that they are not fully committed to the relationship or that they have trouble controlling their actions and impulses. It could also be a sign of a lack of respect for boundaries and a disregard for your feelings. It's important to communicate your concerns with your partner and evaluate whether their behavior aligns with your expectations and values in a relationship. Ultimately, it's up to you to decide what you're comfortable with and whether the relationship is worth continuing.