You will never get over knowing she was unfaithful in mind, spirit, or body you may say you have but deep down it will burn you to the core every time you and she have a disagreement
Not trying to slam you, but if you have a chance get that taken care of before you decide to start a family. If you want to sell your truck sell it, no skin off my back. But please think long and hard (as you are on selling your truck) before you start a family, it is a much bigger committment than what vehicle you drive.
These words are well worth listening to. The first one, I know from experience; haven't had to deal with the second part. I understand giving someone a second chance, but I would strongly recommend three things:
1) Move slowly!! Don't make any commitments yet...don't pull the marriage trigger and sure as HELL don't start working on a family. You're better off giving it time...make sure that you and she still feel the same way about each other in 2 or 3 years. You have your entire life ahead of you; no sense rushing into things, especially with what's been going on recently between you two.
2) Go into this with both eyes wide open...it is easy to be blinded by love, or even by a sense of obligation (I've been in both situations, and ended up soundly regretting it both times), but you need to try your damndest to keep your eyes open and be very, VERY careful.
3) Unless you are 100% certain you won't need a truck in the near to moderate future, I'm on board with the "keep the truck and get a second car" bandwagon. IIRC she doesn't drive right now; that will likely change, and having the second vehicle will come in handy...and, this way, you can still haul or tow if needed.
Just my $.02...best of luck with whatever you choose.
BTW, on the brewing Jetta fight
let me throw in my two cents...I've had my Jetta TDI for about 10 months and am as happy as a pig in ***** matter
With that said, they're a good chunk of change to buy and it's a whole new learning curve. Actually, if you want something you can wrench yourself, I would strongly recommend an '85 or older Mercedes diesel. I ran them for 9 years, and they were great cars...engines will run forever and they're generally good on fuel (I averaged mid 20's), and if you know where to get them, parts aren't ridiculously expensive. As to the Hondas...I refuse to buy gasoline-powered vehicles and I refuse to buy Japanese vehicles