can someone explain to me what he meant please?

He is saying your crazy just like his other ex gfs

idk, seems kinda corny to me. probably has sent "i always fall in love with the right girls i see" to a bunch of women

Sarcasm, whatever he unsent was probably good to have been deleted because he's expressing disappointment that you aren't the woman he was looking for to meet.

Easy.........you told him you are mentally ill...and he said "just my luck. I know how to pick 'em." (sarcastically)

guess not

He's just sarcastic.

He likes(loves u) despite that. And is saying it to u it's his position that he falls in love with the crazy women alot

Nope lol

He is desperately trying to get in your pants.

He falls in love with "crazy" girls

He seems understanding of your mental illness.

Stick to your cat