Ik my situation sucks but

We are long distance and he just got back to college. He went to visit a few friends tonight at there houses. I know he has life but he mentioned these two girls. I've met them and know 100% they are both nice girls who are his friend. It still just sucks because I do trust him but idk what they were talking about and all ya know? I wouldn't be in this if I didn't trust him so I guess I'm okay but you always hear the cheating long distance stories and all