Hi,
Master Saphora has actually pointed out very clearly that Real love has no doubts.
the question u asked is very funny, asking if they will be together or break up eventually?
what makes u think that if they break up u will be the one filling in? could there be a possibilities that another new gal fill in the gap?
the most important issue here is, if u love him, would u wish to see him break up? would u wish for him good things or bad thing?
LOVE must have blinded you that u have such weird question in mind. and real LOVE is kind. because it is through acts of kindness, LOVE is seeded and grow.
if u find that how come u are always in triangle r/s, plant more seed of kindness, lf the man receive ur kindness, and one day if he does wake up and realise ur kindness, he will come to u. if he does not, then he will remember u as a nice girl, hard to say if he intro you his friend which happen to be ur husband, someone who will suits u better. either outcome, it is still a win win situation.
hope this helps. good luck!
p/s: u can lose LOVER, but never lose YOURSELF.