Recently my ex who left me a couple months ago came back and said he regrets ever breaking up with me and asked me to take him back, I haven't officially taken him back but we've been talking again. However since we broke up he's been hanging out with this girl a lot who has admitted she has feelings for him. She always posts flirty stuff to him, and last night she posted a selfie of them napping together in the same bed. I asked him about it and he said "I just fell asleep and she took a photo" and then I told him seeing stuff like that makes it really hard to believe him when he says they don't have a thing, and he said "well I know the truth and that's all that matters to me, people are going to talk about it regardless" I'm really upset about it, and I don't believe him that there isn't anything going on between them, shortly after I texted him about the photo she deleted it off of her page. Do you think there's something going on between them that he's trying to hide?