Girlfriend problem... ;/

By what you said in this thread I highly doubt you are in love.
You may think you are, but it honestly doesn't seem it.
As stated above, love is losing it's meaning completely.
You may deeply care about her and like her A LOT, but you don't understand what love is because this is your first relationship.
I've been in and out of numerous relationships and I have never loved any single female.
You're making yourself seem a little too clingy.
Try to lay back a little and don't be all up on her, not many people like it when their girlfriend/boyfriend is clingy.
I recommend you calm down with the "I love you" bullshit and start using it only when you truly mean it.
I hope this helps you.