I quietly listen as she talks (sometimes vents) about her feelings in looking for and initially dating other men. She doesn't like their rush to get to the bedroom so quickly.
I can't tell if this level of sharing upsets you or not, but if it does: tell her. You are allowed to place boundaries. If it would be easier for you to not hear this information: you are allowed to say so. You don't have to be intimately involved in her other relationships any more than you feel you want or need to be.
I recently had an epiphany in my triad: if I waited for them to resolve my issues, it would never happen. Not because they don't care for me, or don't value me, or for any other reason than that they probably don't know
how. I'd simply pour my concerns on them... and wait for them to do something about it. Meanwhile, sitting there thinking "I feel awful about this," was getting me nowhere fast. I'd suggest you lay out what you are experiencing, what you feel you need from her, and ask her for help to come up with ideas on how you and she can deal with this together. That conversation worked really well for me, when I felt that my guys were not "trying hard enough". It turns out: they were just as stumped as I was, but together we were able to work out a plan, one we are all invested in seeing succeed.
I have read about how polys should work hard to help their mono feel safe and secure. I don't see much hard work at all.
On the other hand... have
you been working hard? What steps have you taken for self-care? To build open communication, to express your expectations of quantity/quality time, etc? Expecting one half of the problem to come up with all of the solution seems unrealistic to me. She isn't a mind reader. She can't know what you need unless you tell her. Waiting for her to ask how you are doing is probably not going to work unless you tell her you need her to check in with you more frequently. Like I am learning, clear communication requires both sides to actively participate; sitting back passively and waiting for her to come to you is going to make this whole thing worse.