That didn't stop my classmates, unfortunately...
We had one divorce, and two death threats against two guys my one of my married group members was staying with. We also had a couple in our class have a fractious breakup, more or less dividing our class.
And then there was our gunner, now a med student, who I'm still amazed at not getting anything permanent from his escapades.
On the positive side, we had two outstanding intraclass marriages. I think we had one or two interclass marriages as well.
There is another posting on this issue somewhere. Basically, I wouldn't suggest dating intraclass due to the problems when the relationships blow up.