Is long term monogamy unnatural for human beings?

[*Deidre*]

Last year, I got married, and I'd say that long term monogamy from a biological standpoint, might not seem natural, because there are always temptations. I think especially in our culture where so much is coming at us on social media, etc it can be hard to avoid those things that may tempt us. But, monogamy is a choice, and if you do take vows with someone to stay faithful to them, then it's only right to stay true to those vows. If someone cannot be faithful, he/she should at least share that with their spouse/partner, and end the relationship to explore others. Cheating is never an option, because you're robbing the other person of being in a relationship where they are under the assumption that they're with a faithful partner.