I’m just confused asf...

Okay so I go a bonfire... and anyone is allowed to come so my ex comes and there is this girl name *blueberries* that’s not really her name but any who so you know like I act like I don’t care for him or anything to be honest with you I didn’t even know he was coming

But it walking back from the water and I said my ex with blueberries and they are walking down. And the whole time they were holding hands and talking... but i was hurt like to even see him with someone... my friend came up to me 20 mins later saying blueberries told us “ he was telling me how he felt and that he loves me and he wants a relationship with me... I told him that I can’t and he said why and she told him because I still love or have feelings for my ex” that’s what my friend told me! So then after I told my friend and she like ohh really yeah I saw them holding hand but then after they let go she looked sad he hugged her and just walked away from... and left her there but after the whole time the bonfire was going she was always with him... laying on him, talking to him, trying to get his attention like I just don’t get it and she tried to talk to me but nah ! And then we play beer pong and I’m going against her and him and she was talking forever so I told her “ can you hurry tf up” and my ex looked at me like really! And then when we left my friend said didn’t u tell me like all this stuff about u saying no and she said idek and then my friend asked her do u like him and she said no... I don’t what to belive 🤦🏻‍♀️ my ex can text me but act like I don’t exist

But should I care? Should I let go? Wonder why he still had her arm around her knowing what she said? Or should I be happy for them? But why do u think she acted like that but said another thing ?