Cam'ron slid into Nia Long's DMs over a year ago trying to holler, and it looks like he finally got his shot this weekend -- 'cause they linked up at a big shindig ... and took pics!

The rapper-turned-podcaster/TV host has been documenting this saga for a while -- way back in October 2022, he posted screenshots of some messages he sent Nia on IG ... this not too long after her messy split with Ime Udoka and that whole Celtics drama.

Anyway, it was a lengthy shot across the bow, where he's singing her praises ... and eventually just comes out with it and says he thinks they'd make a great couple together.

Apparently, NL never responded to that DM -- something Cam'ron made sure to tell his followers a couple weeks ago -- but now, some 14 months after the fact ... they finally got a chance to meet at Rich Paul's birthday party in L.A., where they hugged, talked and posed.

Here's the thing ... Nia actually posted this photo of the two of them cheesing first, but then took it down from her page -- but Cam'ron most certainly kept his version up, and added some extra ones to boot ... probably just to prove to everyone he had, in fact, seen her.

No word on whether this might lead to anything romantic, or if it's just a friendly hi-bye.

We actually got Nia out somewhat recently and asked her about this whole thing, and all she had to say to us (and to Cam, we suppose) was ... oh, hi there! Sounds like he got his in-person hello too.

Lord knows she's one of the most eligible bachelorettes in town these days -- aging like fine wine -- and has been one of Hollywood's most-coveted dames for a good long while.

Jeezy seemed to have his moment a month ago ... maybe now it's Cam's time to shine.

Atta boy!