Hinge doesn't follow the double-opt-in pattern. When you "like" someone, you can immediately send them a message, even if they haven't yet liked you back. I guess that's a big enough differentiator to not violate Tinder's patent.
I think Bumble might be differentiated in that once the double-opt-in has occurred, only one party (the women) can send a message.
No, you definitely can't. You can attach a comment to your "like" but then it disappears into the ether, and only reappears in your messages section if they "like" you back.
That's not true, we can the comment people leave when they like before we like/match them back. The thing is that they can only leave a singular comment/message.
Ah, true, it's been awhile.
However, Hinge is owned by Match Group :)
The Beehive (Bumble) hasn't yet been swallowed by Match Group, but Match Group sure is trying.