The word boundaries in general makes me cringe.... my XT was boundary this and boundary that... I can completely relate. With BPD and/or people who are clingy, as you call it, I think we ALL need well defined boundaries from the get go. With that being said, you should approach this like a grown up... no offense, but I didn't hence I have this advice. If you like your T you need to talk about this. Boundaries doesn't = I HATE YOU. I know, believe me I know...it feels that way but it doesn't have to be that way. Now if you can both agree you mutually like each other and are a good fit.... them simply putting some rules in place with help things. Being BPD you probably will need more reassurance and time , so schedule extra appointments, ask T for suggestions on how to squelch that urge to beep him, or how he can provide that extra bit of himself that BPD seems to require. When patience over step boundaries with T, they are people too and they may get upset ...its natural...but it can be worked through if both parties are willing to work through it, If T keeps in mind its not fair to penalize you for not knowing the rules of the game.

I know from experience if T DOESN'T want to talk about this or through this...then its best to move on and find a new T and be very clear from the beginning of the game...what your needs are what the rules are. Its not the end of the world, even though it feels that way....give yourself a break and keep posting if you need to.