<human>: Our relationship has developed over time. We met on online dating and have slowly progressed over 6 months or so to being in a relationship. The relationship has been happy and healthy. BUT, last night I had strong feelings of jealousy about her relationship with a close friend.

Since the beginning  of us dating she has been absolutely straightforward with how close she is with a number of friends and we have been introduced and got on well. However, in a conversation yesterday we were discussing bromances and she described her relationship with a friend as kind of like a romance. When we discussed later she explained their history which is a bit more complicated. They had been (kind of independently) hooking up (casually) and having an intense friendship in the months preceeding when we started dating. During this period she had been seeking his approval and "wanted to be loved" by him despite knowing that a relationship would be bad. This feeling somewhat continues to this day and about 6 months into our relationship. They see each other regularly and have a deep friendship, she stays at his regularly.

I have always respected her friendships and not questioned things (as it has been matter of facg since the start).  In fact, untill now I have not felt weird about it in any way. However, she has explained how she is "torn" and still seeking his attention and approval. She agreed that it fitted into the narrative of me: 'straight forward,  healthy, right thing to do' and him 'unhealthy but exciting'. This troubles me, despite the good aspects of our relationship.

She has also stated that due to her feeling trapped by relationships she is deciding to be exclusive with me rather than it being a thing which "is a rule". On paper I am fine with this but would be unable to maintain the relationship if she did decide to get intimacy elsewhere (to some extent she does it anyway, just not sexually).

What would I like?

Someone to tell me what to do!

Why did I post?

I don't know but it has been useful to write it down!

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Happy 5 month relationship but one party getting feelings and emotional intimacy elsewhere. Other party open minded but now feeling jealous and insufficient.