Reddit mentions of Friendships Don't Just Happen!: The Guide to Creating a Meaningful Circle of GirlFriends

Finding meaningful platonic friendships can be a bit like dating in a way, as you have to keep meeting people, spending time getting to know them, and looking for people who want a similar kind of connection to you. I have a rule of three to help avoid getting into one-sided friendships, where I reach out first three times but after that leave it up to the other person to contact me first. If they don't, I move on and look for other people who actually
reciprocate. Participating in regular shared group activities can also help e.g. weekly meet up groups, an adult education course, or a sports team.

I also found the following books quite useful and would recommend them:

Friendships Don't Just Happen! by Shasta Nelson

Frientimacy: How to Deepen Friendships for Lifelong Health and Happiness

A lot of people are saying that this behaviour from your partner is unacceptable, and I agree. I also agree that breaking up is probably the best idea.

However, the elephant in the room here is:

a. Your lack of social support and dependence on your partner

b. Your unresolved issues with your dad that pulled you into a toxic relationship in the first place

I would strongly recommend seeing a therapist, and actively working on building a social support network so you won't be totally alone. I know it's easier said than done. It will take time. If you've never been able to make many friends, I'd recommend doing some reading or taking a class on developing your social skills because it's not good for your physical and mental health to be friendless. A drama/improv class might help too. It's also problematic to be so dependent on a partner that you can't leave if they get abusive. Even if you just start by making some online friends, that's better than nothing - one of my best friends is online.

You could make friends on the following subreddits:

https://www.reddit.com/r/MakeNewFriendsHere/

https://www.reddit.com/r/InternetFriends/

https://www.reddit.com/r/hardshipmates/

I would also recommend the following books:

https://www.amazon.com/Friendships-Dont-Just-Happen-GirlFriends-ebook/dp/B07776956H/ref=sr_1_1?ie=UTF8&qid=1519107518&sr=8-1&keywords=girlfriend+circles

https://www.amazon.com/Frientimacy-Deepen-Friendships-Lifelong-Happiness-ebook/dp/B017QL9P5Q/ref=pd_sim_351_1?_encoding=UTF8&psc=1&refRID=9DY83C3B2HF2HZFKD9FM