Long Distance Friends With Benefits

I’m traveling for work and will be away until the middle of February, I will therefore be thousands of miles away from my fwb.

I obviously know that it’s different from a long distance relationship and it would be easier for him to move on to someone else since there hasn’t been a commitment, but are there any ways that I could keep up the interest levels until I’m back?

I’m not very forward, as I’m quite shy, but I am trying to be better! Any advice would be greatly appreciated!