Intro :

So I met this girl on tinder and we had a relationship that lasted a few months. She said I was her first tinder date after trying to get back into dating. We broke up after she revealed she was dating someone else behind my back and I got upset over feeling used. 

Details :

Recently, I dated someone who admitted that i was their first tinder date after a long period, eventually admitting she had a broken engagement awhile back that resulted in a psychological trauma.

Now this has happened to me more than once. I guess I have a friendly and approachable look, fit, totally put together life, and very relaxed personality. I'm not an instagram model but I feel like I'm pretty competitive. I can go from matched on tinder to drinks at bar pretty smoothly thanks to confidence in dating and what i hope is a good personality. Usually this "you're my first date on tinder" scenario ends up with a quick drink and the realization that neither of us have any chemistry and we split. It has always stuck in my mind though, am I just a placeholder? A warmup act for women to date and bide their time while searching for a top tier tinder date?

So anyway, from the get-go I stated that I was interested in a serious relationship and pressed several times over the course of several dates that I wanted to learn more about what she wanted. I wanted to know if we were compatible or if I was wasting time. I never got a real reply, just vague answers or "i'll tell you later". Another red-flag was related to the fact that we both work in the same field, and she said on a date as a joke "i was kind of hoping to use you for your network to get a job", as she is unemployed in the field right now. That worried me but I brushed it off. Anyway, several dates later I got the breakup call, with the news that she's been dating someone else who she was able to open up emotionally with.

I've been through plenty of breakups, and am usually pretty cool about it but this time I had a total emotional breakdown. Just a bunch of sappy texts really. I had been holding a lot of pent up emotion waiting for her to open up emotionally to me but she had been opening up to someone else.

I feel like I was an easy person to date as a placeholder while she searched for another boyfriend. Specifically I feel like I did a lot of work building trust and confidence in her to start dating again, which she used to find someone else. She then dumped all that emotion from our relationship on the next dude line.

Problem :

I feel like I got used.

She feels I am deluded.

AITA?