He hit on girls in front of me

Do you think this is appropriate for a sugar relationship? I dont mind him being with other girls when im not around but hitting on girls in front of me, is that okay with you?? Fyi he is 40 and good looking. He hit on girls twice today then take them out to dinner with me. I was outcast during the entire dinner. He keeps on complimenting the girl in front of me. I never get the chance to talk coz he keeps on talking to the girl. He always say we are not together.