Help! There is a girl...

Well first you have to be wary of the girl's intention as well as yours. Is the girl asking for friendship or is she asking for more? And what are your intentions towards her? If you are well-secured with your relationship right now then you need not be bothered since you could only offer friendship to her. But if you feel that she is really pushing yourself that in a way could ruin your relationship then you should stay away from her. Politely decline her offers and advances towards you. And to help your relationship to stay stronger be honest with your sweetheart. Tell her everything that's been going on so that she will trust you and support you all throughout.

If telling the truth won't cut her off, then tell her you're gay. If that doesn't work, then next time she does call and you're with your sweetheart, have your girl answer the phone...but heavens, let your girl know what's going on. Perhaps another woman answering the phone might shake the stalker loose.

Tell her to leave you alone and that you are in a relationship

First of all an important question: is your sweetheart jealous? If yes you should stop her and tell her that you are already in a love story with a girl. If not, you could become friends, is it so strange to have a girl as a friend??!?

I have had this in the past with an ex. She kept calling my mobile, sending SMS, calling home....... It was so annoying, I kept telling her to stop and did not want to contact her. I tried everything. Ignoring her - still sent more and more sms telling her to go away - still sent more sms being nasty to her - more sms...... Some people will just not give up. You have to decide if you should tell your new sweetheart. If she does not know and then finds an sms on your phone she will think that you are doing something that you should not. If she trusts you and you can tell her what is happening, it could stop problems. But then again it could also make her worried and jealous. You know your sweetheart and what is best. Whichever you chose - I would send an sms and say "DO NO CONTACT ME EVER AGAIN" and then keep this on your phone. If there is ever any argument with your sweetheart, you can show her what you have sent.

If she is calling you and texting you, she is very interested in you. I do not know how she got your phone number. Did you give it to her? Tell her about your sweetie and that you do not think you should continue this.

i would just tell her you are already committed to someone else and you aren't interested in pursuing anything with her. if she doesn't take the hint just ignore her.