Arugment with my younger Sister

Well I'm mad... a simple phone call turned into something more. I was talking to my sister about something that should've been simple, but no it turned into an argument. I was talking to her about a guy a met and I mention to her that he did not have a car and now that is all that she sees. So tonight, I mentioned to her that he is very overweight and all she can see is that he does not have a car. So I said to her that it's okay that he does not have a car, bc I really like him. the weight thing is now the issue.
I don't want my family or friends making decisions about my love life or whatever it is... my sister is judgmental and wants me to live a life that she wants for me. So she mentions that I have been mentioning that she is not "something" in my life. I don't really remember or block it out. I think that when you're talking to someone about your feelings, you should not be made to feel the way they want you to feel, in order to keep everything peaceful in the conversation. That is a lie to the person you are. For ex. I would've been fine with a man w/out a car, but knowing that my sister wud not I changed my mind. It is lying, period.
Its crazy bc I had a dream about Mommy and our bdays and our lack of keeping her tradition of celebrating our bdays, the way she likes. Anyway, I think that this is it.
I want to add that I am still alone after almost 10years of being divorced, I have not had a boyfriend. Just fuck buddies or users, ppl that I thought would mean something and turned out to be nothing. So when I try to explain that feeling of loneliness to my Sister Kat, she does not understand that or gives me the Jesus speech. SOOOO I DONT KNOW JESUS, NOW? WHO THE FUCK ARE YOU TALKING TO? I don't want to hear that, just shut up and listen!! for crying out loud! I'm not John! you don't have to fix me... just listen. This is reason 1, 2 & 3 that I talk to my Bestfriend, she knows when to talk and listen.
So to avoid more drama or damaging words, I got of the phone. and log on here to express my feelings in a positive environment. I also stated that she was right and I was wrong, this is my way of leaving an argument so that the other person is not feeling bad. And I can make my exit faster.
I feel bad about this discussion, but I don't want to be bother with this conversation with my sister anymore. At first I left her out of this part of my life for this reason, plus more of my "closest ppl" are booed up and busy. So I am left up to my own devices. BTW: my baby sister was dating prisoners, ijs.