Not sure what you mean by the last line but I have no problem with Raven and Damian in the animated Universe.
In the comics it doesn't work for several reasons
1) Damian is too young to be courting
2) Raven is too old and a mate of his big brother Dick
I don't think Raven and Garfield have ever had a relationship have they? I might be mistaken but I just can't recall the two ever dating so that part doesn't concern me.
I like their flirting in TT GO and TT the animated series but Terra was always garfield's love imo