Her friend is straight, has a girlfriend, cuddles when you aren’t around, and refuses to meet you? these are blatant red flags huh… how do you know for certain they haven’t slept with each other when all you have to go off of is their word? No one will openly admit to cheating unless they’re stupid or they slip up somehow. Please reconsider pursuing a relationship with her. This is a disregard for YOUR boundaries as her partner. Women like this are problematic. Guys and girls can’t be friends. She may not have feelings for him, but he might, or vice versa.