no time at all
you should give him a heart necklace to remember you buy and if he likes you enough, he'll wear it.
Not long at all.
she might have a boyfriend already, but there are other fish in the sea, so don't give up.
shave them
As long as she has a boyfriend, you should not ask her out.
You shouldn't really have to wait at all but give it at least 2 weeks to avoid gossip
Call him, and give him a kiss through the phone or send him a cute message and a sweet picture that has something to do with Valentines Day.
yeah she should it would give her time to get to know her moms new boyfriend
0minutes
15 mins to 1/2 an hour and it should be cool.
Then he's not the right guy.... for you..~
If you think she's really cool and pretty, ask her out... as long as you and her are old enough and mature enough to stay friends if she says no. If so then give it a shot dude!