One of our bedrock governing principles in biblical dating — and in how we treat our brothers and sisters in Christ generally — is not to "defraud" our single brothers and sisters by implying a greater level of commitment between us and them than actually exists (see 1 Thessalonians 4:6).
I discuss this principle more fully in "Principles for Drawing Boundaries" and "What Does a Biblical Relationship Look Like?
They see each other every day, are with each other's families every holiday (and often know their partner's family as well as any son or daughter-in-law does), they travel together, spend most of their non-working (or studying) time together, they daily confide in one another (and maybe one another), and are without doubt, closer emotionally with one another than with anyone else on the planet.
This is exactly the level of intimacy that is reserved for marriage only and that dating couples should make every effort to restrain until the appropriate time.
If we act like we're married before we've made that commitment, we're defrauding (and sinning).
I also believe that this recommendation applies with equal force to single men and women in college.
I've arrived at this conclusion by thinking through a number of biblical principles.
As your general comfort level around each other rises, that momentum grows even more. We'll assume, per another clear principle from Scripture, that both members of our college couple are Christians.
On most college campuses, that likely puts the two of you in the same relatively small social circle.