(English is not my native language, so sorry if I make mistakes)

Hi, me and my partner have always been interested into trying an open relationship, and we discussed the subject multiple times, but we always had one problem surging up.

She feels annoyed/disgusted at the thought of me being intimate with someone, she feels like I’m doing something that is special and disrespecting her, she rationally knows that I love her, that she will be the main person I’ll care about and the only one I’ll be romantically involved with; but she can’t surpass it as it is non rational thought (apparently).

Still she wants to change and wants to open the relationship in the future, once she can get over this thought.

Tho we can’t find any tip on the matter, it’s the only thing in the whole idea of an open relationship that bothers her.