Just went through that with my husband. At least his truck was 10 years old and had about 160k miles on it, so maybe it isn't quite as bad as your situation.... but it was still pretty painful to cave in and let him get a brand-new Toyota Tacoma.
His dad bought a brand new Silverado the same week, so he just had to get a new truck of his own. I understand the peer pressure.
So, anyway, no helpful advice here. Good luck. I caved because I know that, in the long run, a Tacoma is cheaper than a divorce... and he's a great guy, aside from our differing attitudes towards finances, so I have to compromise. (He bought a 2017 instead of a 2018, he allowed himself to be talked out of 4WD, he bought the base model, etc.) I still get a little bit irritated every time I look at that truck in our driveway, though.