lol welp people are putting words in my mouth so im booking it out of this thread after i say what i wanted to say in private to OP
Get help ASAP, don't hide your illness from people that have to know.
When you get help, from a therapist or a doctor, be aware that they can only hold your hand through what your illness is. You have to do the work as they guide you through it.
The pills you might get have a ton of side effects, it's up to you if you want to take them. I didn't. I prefer cannabis because it makes you happy instead of numb. My ex used to take prozac and that was not ideal. (Hell I have 3 other friends that take it and same story).
If you ever have a breakdown, don't fight it alone, get help either long distance or close. As long as you are distracted.
I've personally used escapism a lot to get troubles off my mind, find some good books you would like to read, or movies you'd like to watch. Personally, I never feel as good as when I get back from the movies. It's awesome and I go to the movies for primarily that reason. Don't be afraid to go out alone.
Going for walks helps a lot too, pick some nice music (I play Passion pit) if you go on one.
If you have to deal with impulse reactions, and realize it was all wrong either directly after or a while after, explain to the person in effect what happened. This is really important, they have to know that whatever you did was influenced, then it's up to them what they'll do with it.
Oh en please refrain from long lasting impulse reactions like writing up a story or spending money. I sometimes make a purchase or write a post on a forum, realize it's totally wrong and shrug, thinking "this is an impulse reaction and I can't stop it" whilst I obviously can. (Most of this has to do with stalking my ex).
Please stop hurting yourself by the way, it will do nothing and if you ever feel like doing such a thing, find distraction, like I said. Don't hurt others that care about you by hurting yourself. No one wins.
I can't really help with the lying part, because it simply is quite vague if it's part of borderline or not.
Good luck, I'll still read replies in this thread and if you have a question about this post, PM me.