Search Results: ex boyfriend keeps calling

So my boyfriend told me he was playing basketball from 8-11 last night which he was. But not for the whole time. One of his best friends messaged me and asked me if I could keep something between me and him and I was like sure and he's like it's "kinda fucked" and I was like okay? And I started freaking out right away because why would his best friend be texting me like that. So I start blowing up his phone and I went to call him and the gps thing shows up and says he's at home like wtf he told me he was gonna FaceTime me when he got home. So I called his other friend who was with 3 of his other friends and one of them said "he's with my ex girlfriend at his house kinda fucked" so I start sobbing and calling him and he'd answer and Tyller (the girl ik stupid ass name) would say hey and then the phone would hang up. Finally he answered me and we started talking and he said they were just smoking and I got pissed because boi it's 11 no bitch should be other there but me! That's beside the point, do you think he was cheating or no?

My boyfriend and I broke up after a 2 year relationship that was amazing because I was leaving for university next year. He kept telling me we have no other choice and he is right. We decided to still be friends
2 weeks after the break up he came to meet me while I was with all of my girlfriends claiming to meet all of us which is BS. He was being so over friendly with them and weirdly normal. But he sort of was pushing me away and acting as if nothing happened.
I called him last week to tell him some news about my university application and in the middle of the conversation he had to make a call to his college coordinator for some work and apologised and said he would call back but never did.

He called 6 days later to invite me for lunch on his bday with 2 of my friends and 2 of his (who I have not met but know of). He apologised then for not calling back with a very lame excuse. Even when he came to meet me he was told me to be free on his birthday and I do want to go but its hard being around him because of how things are. But its his 18th birthday and I definitely dont wanna ditch him. I am probably going to go but, do you think I should go?