I got into a fight with my boyfriend last night...we fought over being in an open relationship.
It's definitely a big deal that both parties need to agree on, especially as being in an open relationship means being in a consensually non-monogamous relationship!
I agree, both parties definitely need to agree, but come on...An open relationship?! I want to get married to him one day!
I don't think an open relationship is appropriate then, as it means both of you have the opportunity for certain "intimate" relationships with other people! Though, not necessarily romantic ones.