Mike - was in exactly that position. The gf wasn't that excited about it, but when she saw it and went out in it (and also found it more comfortable as a passenger than the Mini) she came around. Good thing too, as that patience with it will get tested when you're spending money on the car rather than on holidays away together

Worth being aware of the D relationship curse though - more than one breakup on here has been shortly preceded by the purchase of a DeLorean

(mine above included). I'm sure you'll be fine. The bloke she ran off with probably had more to do with the breakup than the car
