make a commitment to pray for each other. ... pray with each other!
Praying tears down every barrier and builds strong bridges.
PRAYER
It also puts things in better perspective. When praying, the two of you are working toward something together, and express your hopes and dreams.
Even though it makes you feel very vulnerable at first, it leads to less actual vulnerability, because competition lessens. You see each other protecting the relationship and caring for others through prayer.
GROUP FELLOWSHIP
Another thing that can help -- get involved with a support group, like a Bible study fellowship, where you have other people you can lean on and interact with. When you're so busy with school, it is tempting to want to use every bit of spare time to spend with the other person. But clinging can feed fear-based thinking (will I lose them if I'm not with them).
With a group, you have someone to talk with if things aren't going well.
REAL LIFE PROJECTS
Relationships can get very inwardly-focused, and fermented. If you continually breathe new life into your lives with fresh input, the relationship will feel a lot healthier.
Do some service projects together, babysit relatives, serve on a committee, play sports or music ... do something together that moves your life forward, and takes the focus off the relationship itself. Then it will also be easier to see who the other person is, not just who you want each other to be.