My brother's getting married...again

[GT40FIED]

Oh man...I'm not sure how to feel about this one. A couple years ago my brother (who is 1 1/2 years older) decided to get married. I didn't like his girlfriend and just knew she'd treat him like shit. Lo and behold I was right (like always) and after 9 months of marital bliss, they got a divorce.

So today I call my brother up to bullshit with him and he tells me he's engaged to a girl he's been seeing for roughly a year and a half. I actually like this one so that's a plus. My problem this time? My brother and this girl started dating only a month or two after he split with his now ex wife. Normally I would consider this bad form...but she didn't even wait to seperate to start seeing another guy. Well...she didn't even wait to tell my brother before she started seeing another guy. Whore. ANYWAY...the problem is that she (the new girlfriend) also started seeing my brother a few weeks after she broke off an engagement, so for both of them it is essentially a rebound relationship. I'm thinking I should just keep my mouth shut. I told my brother about my concerns last time (as did 80% of his friends), but to no avail. Plus I actually like this girl (even though she thinks I hate her because I always give her shit) so that makes it even more complicated. Arrrgh. My brother is turning into Ross from "Friends".