Me and my girlfriend have been together for 4 years we used to have sex all the time nearly every day not long ago we had a bad time split up for a day and got back together every thing was good well has been grate be the past week we have had sex and they have only have been a quick one I love them but I like to make love to every time I ask I get a ill think about it or a no I don't feel like it I'm not shore what to think any more?

As far as what I can get from your message (typing it out better would help), you guys having sex now is short, and you would like to have longer sessions.

What's the issue, you guys just aren't into it? If it's that you feel you guys aren't into it, try introducing things to spice it up that you both like.

How old are you?

If you would take the trouble to write in sentences, with beginnings and endings, and spelling and grammar that we can understand without getting a headache, it would be a big help.
People lose interest in sex all the time for an almost infinite number of reasons. Why not ask her? Perhaps she feels that after 4 years you have a juvenile shallow relationship based only on sex and it's going nowhere, as far as the future is concerned - life, jobs, living together, marriage, kids, you know the stages.

Please, no more responses until the op gives his age.

This is the Adult Sexuality Board and we need to be careful about ages. Thank you.

Ages help us understand where you might be in terms of experience, maturity, etc. please post both hers and your and whether this is your first long term relationship. First sexual? Her first? Do you live together? Apart? Do you have "safe space" to have sex, meaning no distractions, getting caught, etc...

Has anything changed in her schedule? Yours? Stressors? Are you using protection?

Can you please explain more... because from the OP all I get is that you are still having sex, its just not as long as you would like. So... details please?