should i? Options

[kyootE_krn_bebe]

i remember it was about a year or two? ago when i wrote in
"relationships" about my ex who slept with another gurl.
he left after the incident happened and came back last friday.
thhe day he came back "our group" met up and ate dinner
and had some fun. it was like ol' times. laughing..talking..

after the incident i wanted to show him that i could
move on so i just picked a guy and hooked up with
him (i'm stubborn) and....well..he did the same.
BUT. my relationship didn't last long since i didn't
really like the guy..and his lasted up to yesterday.
he broke up with her for me. ever since he came back
he's been talking to me alot..calling me..talking about
our past..and he told me he missed me..and that..he
never stopped liking me..that he regrets what he did
and regretted every single day while he was gone.

he wants to get back with me...i like him. actually
i love him. he was my best frend before we hooked
up and that helps alot. i forgave and didn't forget.
i don't wanna look like a loserr but i think i still have feelings
for him. i just don't know i can trust him?? you know the saying
"once a cheater, always a cheater"
should i hook back up with him?...
or should i not? . . .