Initiate cardio contact?

In layman's terms, has anyone ever done anything in an attempt to listen to someone else's heart/have someone listen to yours etc? in any way? I remember besides all the happen stance times that I've had surprise stethings or had people randomly feel or listen to my heart, I do remember one night while watching a movie with my now ex (the same one from other stories) that she was laying her head on my chest as usual with her ear right against my heart and I could feel my heart just punching her poor ear to death. so I said, "I'm sorry. I know my heart is super loud because I can feel it hitting your head." and she said, "shush, I like hearing your heart. it sounds nice." or something to that effect and adjusted her ear so that it was pressed against my chest more firmly and with more pressure. which only made it beat harder and faster >.> what a tease

Yes, and repeatedly, despite the fact that the other person does not realize that I like it

Yes, me, too! I had some cozy nights/experiences with some of my ex-female partners, right after sex, 'just' before we slept or on lazy Sunday afternoon's. I listened to their hearts intended but none of them knew that I did it by intend and none of them ever knew that I'm a real cardiophile.

Some of them lay their ear on my (bare) chest and listened, commented that my heart was quite pounding. At this time, I was really too shy to out myself as a cardiophile. Meanwhile, I self-confident and matured enough to stand for it.

Apart from that, I'm looking for some mutual stething appointments around my area but, at least, I had just one, but this was such a great experience I'll never forget. And, it motivated to have lots of similar of them in the future.

I've ear stethed quite a lot whilst watching tv and occasionally after being intimate

Good question. Yes, I've done that to a few ex girlfriends, laying my head on their chest with my ear pressed against their left breast. It’s very intimate hearing their heart beating, one was fairly small breasted so her heart was very clear, she actually asked if I could hear it. Oddly though, even as a child I can remember this happening when I did similar to my mother, albeit clearly a totally different example, but I do recall the comforting feeling hearing her heart beating.

When I was dating I used to tell guys I could hear their heartbeat while cuddling. Most thought it was incredibly cute, and some even asked if they could listen to mine as a trade off. 🤣