I'd rather someone say they're losing interest, than have them feel forced to stay or even worse, just drop. Talking is underrated, it fixes things and makes things better. As long as you're clear about how you feel and how you want things to get better, not fizzle out like they are, I think things can he mended. To me, it's more promising than hoping things will work out in the end because the problem isn't ever addressed and both people end up getting upset at some point further down the road. You should talk to them, or at least brainstorm about the RP. 

I think one is about a black guy coming back after serving in World War 2, the other is about a Chinese family trying to adjust to life in the 1900s in CA, and the last one is about life in Southern CA in the 1950s for a working class family. So they don't sound so bad, hopefully I can get one done this weekend and just do one a week and get them out of the way. ^^