<human>: Give me the gist of the text in a nutshell

My wife and I marred when we were 19, shortly before our 20th birthdays (they're close together). One of her reservations prior to our getting married was that she wanted more sexual experiences, we were actually both virgins until we met. However, at the time I had more conservative views and was against it, she acquiesced, we got married.

Ever since she's periodically brought up that she would like to be in an open marriage. For a long time I was against it, but the last few years the idea hasn't really bothered me that much. Now my main issue is that, she being female, is going to have a really easy time finding sex outside of our marriage. I, however, have no romantic experience with other women, am generally taciturn, and not particularly attractive. To put it mildly, my chances are slim.

We've been married 8 years and are still delaying having children for another year or two. If this is going to happen while we're still relatively young and unencumbered  then the window is getting pretty short. I don't want to feel like I'm restraining her from something she wants, but at the same time I also don't want to end up jealous/depressed because my wife is seeing someone on the side and I'm not.
<bot>: My wife wants an open relationship, I'm not sure if I do because I'm dubious about my chances of getting of laid.