do u ever think my ex bf may check my fb?

[520]

me and my ex dated for almost 2 years then he broke up with me cuz we had arguments on texting
after breakup
first month we stayed friends but couldnt handle it
second month i called twice only.first time he said hes gna do surgery,second call i was worried he didnt pick up
i texted him saying i still love him he made his czn pick up and say hes in hospital and that i should never talk to him again &to stay away hes not good man for me
and yes i made sure hes lying abt surgery.since that call i told him on text and fb that im gna leave him alone but im really hurt and sad etc
he didnt reply both of them,hours after i sent fb msg he deactivated

my ex bf had 2 fb
one he used to use it with me(only had 10 friends) he deactivated it month after the breakup hours after i sent him that gd bye msg on it(im sure he was stalking me)
another facebook he used to have it before we were dating it has like 70 ppl,few girls but most of them r old friends he deactivated when we started dating(idk why)
now hes back to it,,,but theres no updates no pics no new friends its all the same...we r not friends on it
do u think hes using it to stalk me as he did with that account?

my fb is deactivated cuz i feel like craap but should i go back to it &make updates and all?
any idea how to make him regret leaving ?i just still love him...DONT TELL ME TO MOVE ON CUZ IAM TRYING