That I believe is clasping.
I think there is a very subtle difference. hand and hand just refers to two hands not necessarily together.hand in hand implies that the hands are connected or together.
hand in hand is when two people are holding each others hands tight.
Schools out forever.
Well I personally (as a girl) think its really sweet so if you want to go ahead!it is really sweet!! (i'm a girl also) you should just go for it!!(: