they still like you and can't help getting jealous seeing you with someone new or you did something that made them mad
No, because seeing as he is twenty, that would make him a paedo.
Ask her.
Well, seeing how he's currently 19, I don't think so. That would make you 12 and him a pedophile.
Even though you guys broke up, even after 2 years, she can still have feelings for you and would get jealous because instead of showing affection to her, you're showing it to another girl.
Find someone else and stop seeing him.
kill him
As stated, he wants to hang out. Guys don't think overly hard about things, so what he says is what he means.
Why should you tell your ex at all? What concern is it of theirs? And why would you even bother filling your ex in on your current love life? The relationship is over, so get over it...
Someone was 49 years old in any year of your choice.
yes
If someone was born in 1950, they would be 71 years old in 2021.
Assuming someone had already had their birthday, taking this year as 2010, they would be 37 years old. If they had not yet had their birthday, they would be 36 years old.