Yes, it is okay to ask him to your semi-formal.
Not anymore. In 2008 they were a couple.
They were for a few episodes, but not anymore.
Do you mean because they've drifted apart from old friends? Are you looking for couple friends? There is friendmatch, which is online matchmaking for friends and activity partners including couple friends.
no they are not together anymore
you cant be both friends and couples so if you get togheter you cant be friends, but you are a couple, but if you don't get togheter you are still friends you are just not a couple.
Relationships could end because someone in the relationship was cheating. Also they could end because (if it is a relationship at school) they are getting laughed at by their friends, or simply because the couple do not love each other anymore.
Replace battery
it was in the catolog a couple of months ago
They must have liked them together as a couple.
not anymore-he died a couple of years ago
he has a couple
Not anymore. his dog died a couple odf years ago