Search Results: ask him to give me a second chance

I've been in a relationship with my boyfriend for over a year now.
we have our ups and downs
we do argue here and there and mostly because of me. i cause drama and get mad over little things. he got fed up and so 2 weeks ago he ended it.
then i asked for a second chance and he decided to give me another chance to prove that i would change my attitude and all
but thing is.. before break up, he always tells me that he loves me and he's happy with me
and then before we decided to get back together, he said "im happy to be with you again"
and then after we got back together he said to me "im happy with you"
Do guys mean it when they say they are happy with their partner? do you think my boyfriend means it?
even if i get angry over little things? is it possible?

me and my boyfriend was just chillin at his place and we were cuddling and then we talked about our break up 3 weeks ago (he ended things with me coz he felt like he was the only one making efforts and more affectionate and that I always ignore his messages and calls and he had enough of it but I asked for a second chance and he gave me second chance and a week later, we got back together)
this was our conversation:
him - "did you talk to that guy that you used to be friends with after we broke up? he probably knows we broke up and u probably unblocked him and talked to him?"
me - "no i didn't.."
him - "tell me the truth.."
me - "i didn't unblock him.. but i was going to though. but i didnt"
him - "okay.. coz if u did, then that means he's your back up plan. and that you're just fuckin around"
me - "so what if i did tho? I mean i didn't but what if i did? we broke up..."
him - "we broke up for only a second.. if u unblocked him, that means you're not serious about getting back together... oh well.. if you do go talk to him again or any other guys (flirting), and if i find out, there's no second chance for that. i dont care. im going to move on. i have no time for that shit"
me - "soo you're just gonna move on just like that?"
him - "yepp. dont have time for bullshit. this happened to me with my first girlfriend. im not going through it again"
me - "if u move on quickly, means u never had feelings for me"
him - "no its not that.. i mean im not talking about now. im happy with you but if u do talk to other guys being flirty and shit, then im gonna leave. means i deserve better"
Does he not care about us?
Would he really move on quick? do guys move on that quickly?

just say your partner didn't treat you the way you want them to treat you and felt like its one sided
and then you ended things with your partner
and your partner asked for second chance and willing to change
would you give them a second chance?
if yes, why?
if no, why not?