I could not disagree more. A counselor who enables you to stay in an emotional and sexual dead zone because of "complications" and "history" and the convenience of being able to hire to scratch your occasional itch is not a particularly effective counselor. I would have fired my counselor immediately had he or she suggested I stay married because I could hire an escort every so often.
The mere fact of history is no reason whatsoever to stay in an unhappy marriage, gay or straight. You should reconsider the advice AND the source.