just need some support

So i was dating this guy, he was honestly truly amazing. He treated me so great and always showed me how much he loved me. He would do anything for me. We started dating 3 months ago, March 21st. We had only been talking for a week when he asked me to be his girlfriend and i had just separated from this guy that i talked to for half a year. I ended up really falling for this guy (Angel) and it was pretty amazing. He lives here in mexico and i live in the US but i come here ever time i have a break at school so i'm pretty much always here. I came for the summer and he came on our anniversary of 3 months. It was good but i was feeling not as "excited" i guess i could say. But this time my ex was in town as well since he now lives in the US too. We were cruising with my friends and my girl bestfriend is cousins with my ex. We saw him in the street and we stopped to say hi. I was feeling so anxious and nervous. I honestly completely forgot how to act normal. I felt different i just wanted to get out of tge car and hug him. And i could notice my boyfriend being weird which he later on told me he knew we used to date which is why he started acting that way. So my boyfriend left since he lives in a town thats 45 min. away from here. We had to go drive my friend back to her town which was only about 10 min. away. So we decided to invite my ex (Kevin) and one of his friends with us. We went, we stayed there for a while we talked listen to music and well it was a bit awkward but my friend kept telling us to hug, that we hasn't seen each other in almost half a year. So we hugged and it was just so amazing how i felt when hugging him (this is cheesy af) but i just didn't want to let go. I would look at him and i would just feel so great just by being there next to him. And that's when i knew i wasn't even close to being over him. The next 2 days me and my boyfriend were being so serious he wouldn't text me and i felt kind of ignored. He told me we were just going to shit and i kept telling him eveything was okay. But at this point everytime i would text him all i could think about was my ex. How much i felt for him and how bad i felt because i was with my boyfriend when i still loved this boy. So another day went by and i decided to tell him we needed to take some time. He told me that whatever i wanted to do. It was hard simply because it's not that i don't love him i just couldn't be with him feeling this way. So about 3 days passed and my now ex asked me if there was someone else in my life. I didn't know what to say to him. I knew i couldn't do it anymore i couldn't keep lying to him i told him the truth. He got really upset and told me things no one wants to here. He told me that all it was, was a waste of time because i was still stuck on my ex and that i wasn't the person he thought i was. It was veeery hurtful. But i know i deserve what he said and i know he was hurt. I feel horrible but i know i couldn't do this to him.