Verified answer

First off mJc never ever tell someone to thank their Best friend for dumping them. Anyways, i know you're not being dumped as a friend. I bet you there is something in your life going on that may cause your friend to ignore you. Please don't feel like that.

dont get jealous if you do that youll her for sure

if you guys are as good of friends as you say you are than just talk to her tell her how you feel

and if she says that you are imagining things or calls you jealous than she was never that good of a friend in the first place and you are sadly probably better off w/o her

Wow that suck's, try planning a day of fun and be sure to invite the "new friend" so that you both get to know her, NEVER KNOW maybe you can all become real good friends

You should always thank your best friend for dumping you... it usually means you're about to find a better best friend.

Find someone new. If she isn't interested, it's best to move on.

talk to her