Hey again guys. Definitely. I don't think she'd see it as too weird when I make her understand that it's all about putting her pleasure first. I like that.
I've definitely tried dropping in during sex before but I think she's always brushed it off. The best I've gotten was when I gave her a very long and sensual massage; I started a roleplay that I was this sexy, muscled masseur who was touching her all over while her boyfriend (me) waited outside. I managed to get her to moan 'he would be so jealous' and 'yes I want to feel you inside'. Stuff like that...
Regarding the 'bigger dick' angle, I have a bigger than average member that is consistently too large for her (twice the size of her ex in china, im told). We've actually stopped having sex now, sorta. It just hurts her too much. She's always said that would be scary to have bigger...buuuut at the same time, she does love big dicks. She's said its been one of the reasons she stayed with me in the past, and even asked if I would be worried about her leaving me for a better dick when I brought this up before. I think she'd have to see a guy with ripped muscles and a huge dick to make her think 'hmm...'. Haha.
As for the 'origin story', it would have to be in the first couple relationships at uni where I really fell for girls that were pretty much wanting to stay single. I'll try to keep them brief I guess haha.
One was really short and it was when I was at uni, a girl in my dorm who pretty much jumped on me as soon as she saw me, but I was a virgin and didn't satisfy her sexually at the time. Still, we dated. I remember cooking her dinner once and went to her door to let her know, only for her to pop just her head out, red in the face and out of breath, telling me to go away. It occured to me months later that she was getting fucked, I was honestly really naive, lol. She left me for someone else days after saying we could be offical. It hurt, but I also remember being surprised at myself imaging her having sex with that guy when I masturbated in the following weeks. Kinda shrugged it off as a weird one-time thought.
The other relationship was with a girl who was attending a uni in a different city, so we'd see eachother every so often. She was out clubbing and drinking 2-3 days a week and definitely sleeping around. When she moved back home from uni, we started seeing eachother properly, but she'd always be texting mysterious people, and would always bring up guys she'd slept with or hookups. It made me feel really awful because it went on for months without me ever saying anything to her about it. I was feeling jealous and made the mistake of asking if she had anyone bigger, and she compared her ex (who she had talked about before "we basically just had sex all day...") to a 9" thick dildo we had seen in a sex shop. She also mentioned some random guy from a club had made her squirt using his fingers and tongue when she never let me try either of those. Oh and apparently this happened some days after we met. Crazy. I never got to see this sexy, party side of her, she was just this sweet girl to me. It felt like I never brought any desire out of her like these other guys did.
When uni started again, she was snapchatting this guy blatantly right next to me all day and night. Then she goes on a 'girls night out', and ends up at an afters with him. Texts me that she's 'Going to bed with <guys name>', someone she has never mentioned. Time goes by and she shows up the next afternoon wearing someone elses t-shirt, and tells me they were doing coke but only 'sharing the bed, and didn't do anything'. I protested, but she turned it around on me somehow, and within a week she broke up with me over the phone on the way to a party. Hours later she would upload a photo to her Instagram with his arms around her waist as she's dressed in a sexy halloween costume.
This really fucked me up for a long time, but for a couple months before that I was already getting really aroused at the thought of her having sex with another guy. Hell, even having feelings for one. When I realised, I bought her a dildo that was a bit bigger and firmer than me. She was kinda excited to see it when I told her, and when she tried it, she came within SECONDS. It was insane to see, and it was something I could never do. I think that may have done something powerful to me.
I know it's not a 'healthy' start to the kink, but I've had a lot of time to process it, and the urge never went away.