Probably the same as the previous question. I think the best romantic partner is the ones who attract you. But i experienced that some types could be rare, and therefore i could be attracted to people that aren't one of those types. Also, you can't decide who is attractive in your opinion, but you eventually find out that a relationship is impossible to start, because you are too different.
I never had a relationship. I only kissed one girl in my life, and that was an ISFP, but that was something i regretted, because i didn't like her, but i didn't want to disappoint her, or just walk away when i had the feeling that i needed to kiss her. I only started to know here at the same day, and we never saw each other again after that day. Very strange day in an already unstable period for me. It is already five years ago. My next kiss would probably feel the same as someone else's first kiss. It was also not a passionate or romantic kiss. I didn't close my eyes while i kissed (so that's not really a good kiss). It wasn't from the heart. She also had a relationship at that time, and i knew, but she couldn't resist and i wasn't assertive enough. We chatted a lot after that on facebook, but we only argued. She was probably ISFP (also a writer), and definitely a feeler (All the time: Fi-Fi clashes on Facebook, we couldn't speak normal for five minutes). If i had to compare her with a celebrity, would choose Amy Winehouse.
Which types are attractive. Well the question is already asked many times, and i'm still not sure about it. From my experience, i tend to really like ESFP's and ENFP's, but i never get positive respons from them. They also often want a really guy (an ExTx or ExFJ). I also like some ESFJ's, but they never abuse my attention, and they already give me no hope from the start, while ExFP's tend to abuse my attention. I have no clear examples of ENFJ's so i can't judge about that. Maybe i type some ENFJ's as ESFJ's uncorrectly.
It's also hard for me to recognize female thinkers, but i tend to be drawn more towards feminine people who show their emotions, so i think it's less likely that i would find a female thinker attractive, although they can ensure more stability in a relationship and household. Especially introverted thinkers. It's hard to meet introverted thinkers, especially because last years i only learn to know females in a feminine environment where female thinkers would be drawn more in studies with exact sciences. INTP's is probably the only type that i would like to meet because they don't use Fi and they don't use Se, but are still introverted and a thinker.
INFJ's are theoretically also a fine type, but i'm not really sure what to expect from an infj, and i can't have a clear image from how an infj would look like. I have no examples (or i can't recognize them barely). Same for INFP but i experienced that the Fi-Fi clashes (and both Ne-Ne (so no decision making process)) could be exhausting too.
I'm not going searching for people from a certain type, but i notice i found someone attractive and then i will find out their type and go for them (to eventually find out that i can't seduce her or that she isn't interested in me). So experience told me that i tend to find esfp's and enfp's attractive. I think I also could like a lot of intp's, infj's, esfj's, enfj's and infp's. But i'm not sure of it.