I just watched Season 2, Episode 4, and (SPOILER ALERT)-- was anyone else angry with Matthew for sending Lavinia away? I understand his motivation, and it seemed like a selfless act of self-sacrifice at the time. But, as I thought about it more, I felt like it was arrogant and patronizing of him to unilaterally decide what Lavinia should want out of a relationship, without listening to how she felt about it. I feel that a better approach would be to give her the news, give her time to think over the implications, and offer her an out along the lines of, "If my injury and its repercussions would force you to give up aspects of life that you value too much, I'll understand if you want to break off your engagement with me, and I won't think any less of you for it."
It also seems really unfortunate that he (and everyone else) had such a restricted view of what physical intimacy should be that his injury would be seen as an automatic deal-breaker.