Sorry you are faced with this decision. Long-distance relationships often find their way to question loyalty, interests, time-management and more. Time away from a partner can strengthen a relationship but can also challenge both your relationship with each other, and who you are as individuals. It is very possible people grow apart whether they live close or far away from each other.

I would make an effort to replace the comforting part of the relationship with something else comforting. Then decide how you feel about each other. How does your partner feel about what you're feeling?