Yes pregnancy in such situation can occur as all of the seminal fluid contain sperms.
Well, it depends on the guy. Most guys would.
Tell her the truth.
The way he look at you.
Im a guy and I think I think I would want to know when another guy hits on my girlfriend
asking him would work
ask
Nope. That would be immaculate conception.
If a guy is still into you, he would smile at you always and always be nice. He would do anything for you and always be at your side if you need him.
He'd tell you
Umm.. Ask him ?
look in his eyes