Clash between gf and female friend
My girlfriend is 5 years older than me.She is a very nice girl,with a too good behavior and maturity.I love her and we both are very much keen to each other.
The only problem is that i have another friend(Girl) who is a long time friend of mine and we are very close to each other.She is a good looking girl with a very good figure.As to be so close to each other,we share some sexual experiences like- our first kiss and some really good intimate moments.She also proposed me about a year ago.
Now, i have a good sex life with my GF,a nice one.But sometimes,i can't but thinking of that friend,imagine her to get intimated with me and i got excited.Even i do some really crazy things in excitement like masturbating or thinking to get separated with my GF and make her my new Gf etc.But when the excitement is over,i feel really bad and repent for those things.When i call her sometime in excitement,she tells me she had same feelings for me now also.
I love my Girlfriend too much,I don't have a little feelings for that other girl,only a terrible lust that seems impossible to be controled.I want to get rid of that and have a peaceful life with my GF.
Is my lust to that friend is Normal? Please Advice me what should i do to get rid of that.