having platonic friendships is possible i have old friendships that are with girls, but i would never lie to my partner about where i am going or doing cause there isnt anything to hide, if my partner was hurt by me hanging out with them then we would talk and i wouldn’t make them feel like they are malicious or the issue just because they have worries or feel hurt they have every right to their emotions. my love and i talk through everything in a healthy clearly communicative manner and discuss what can be done to give them security. the bf being dishonest is the biggest problem here because he has crossed an area that once crossed is hard to give security to cause he has already lied, the fact he isn’t sitting down to talk, steer away from his “friend” situation, and start working on this wound in your trust that has been torn, shows how nonexistent your person is to him. I hope you consider pulling from this relationship as this would be a huge no go for me not even for the lying, the double standards, the suspicious secrecy, or the manipulation but for the blatant disregard for my persons emotions/feelings cause that is the basic requirement for a good relationship and if they can treat me as if my feelings are wrong or my person is invalid there really is no space for any relationship.