Need recommendations

Lately my girlfriend has been coming home from dates and wants me to have sex with her to reclaim her. Between how warm and wet she is and him leaking out of her, i am having trouble holding out. And since im not allowed to cum inside of her, i usually end up having to pull out and end up blowing it in my hand or on the sheets after a minute or so. She usually ends up laughing at me as she pulls out her vibe to finish the job.

Dm me if you need anymore information or if you have any suggestions on techniques or anything else to try and last longer? Its pretty humiliating.