If someone talks about union, fidelity, a monogamous relationship, love, blessing; I would say it sounds like marriage to me. And blessing, you see, I think is undermining our sacrament of marriage. ↗
Straight couples don't have to be monogamous to be married or married to be monogamous. Monogamy no more defines marriage than the presence of children does. Monogamy isn't compulsory and its absence doesn't invalidate a marriage. ↗