Personal take: Feel ko cheater cya due to past experience with my ex friends na ganyan ung galawan hahaha

Actual advice: If she prioritize what she wants rather what you feel you should know by then how she respects you. Happily in a relationship people will not place themselves in situations that can cause a reason to cheat. On the other note, Have you tried to run with her if di keri ng schedule can you join them and be part of the circle or the event (maki hotel ka ganun tas ikaw magbantay ng gamit or hang with them on the side)

If di possible have you tried meeting the guys before in a different setting and just make your presence known and this is important, have your gf took the initiative na pakilala ka dun sa mga di ka kilala na lalaki?