I have been with my partner in a long distance relationship for 5 years. Recently they opened up about wanting to date other people, and exploring intimacy outside our relationship. They aren't sure what shape that would take- whether they're interested in casual dating, romantic relationships, or only in sexual intimacy with other partners.

Our relationship has been entirely monogamous before this, and I'm not sure where my boundaries lie or what I'd be comfortable with. My initial reaction to this, is that I could be okay with my partner exploring physical intimacy with others, but not romantic relationships.

This has also led to us thinking about what love or attachment really means to each of us and how we navigate that. I'm having some trouble wrapping my head around how the dynamics of our relationship may change in the future, and whether I'd be comfortable with all of it.

This also comes at a time when I'm about to make a major decision regarding a career change/ grad school that would take me to the same country as my partner. Our original plan was that I'd be relocating with the objective of us living together and perhaps eventually get married. Now I'm not sure whether I should continue with the relocation given how our relationship may change.

Would anyone have any suggestions on resources I could look up to better understand things? Or what questions I should be asking myself and my partner? Any advice at all on navigating this situation would be great!