Hey man,
I am in a similar situation to you. I am young, a christian, and also attend a secular college.
For the past year or so, I have desired to enter into a dating relationship with a woman. Yet, each time i begin to consider seeking a woman to date, the same old wisdom comes to my mind: "Lance, why are you pursuing a relationship right now? What is your motivation? Is it to entertain you and give you a reason to feel good about yourself?"
Inevitably, the answer continues to be yes.
I am not saying this is the issue with you particularly. I am just saying that I think many young Christian men like myself tend to believe the lies of the world that say we need a beautiful woman by our side to make us.
Interestingly, to go along with my desire to be with a woman, I also struggle at times with poor self-image, confidence, and faith. I know that when I am with a woman, she becomes a source of these things for me, when in Truth, the only healthy source of identity, confidence, and faith is God.
I do not like giving this answer anymore than I like hearing it...I truly want a wife someday! However, I believe that at this point, all i would be bringing into the relationship is a self-seeking motive.
Instead, what I am learning is that in Christ, I am already accepted, loved, and significant. In Christ alone, we have all that we need for life and Godliness. 2 Peter 1:2+3
Believing that we need girlfriends to be at peace with ourselves is a lie that robs us of the very joy and peace that we are seeking.
Blessings in Christ,
Lance
btw- I might have been totally off in my response, these are just the meditations I have regarding my particular situation.
ps. So far as dating non-believers goes, bad company ruins good character. 2 years ago i tried this, and i ended up conforming rather than the other way around.