Don't Mention another Girl

Never mention another girl in front of her. If she really loves you she wouldn't want you going off with other girls. If you say anything about another girl without saying she's ugly or something she might get mad, get offended, cry, etc. also,you might give her the ilution that she has a love rivle and will hate her, and in some don't think that you want that.

good luck!
ps. I would know this, being a girl myself^-^