Unbalanced Libra?

Turns out I like Libras. It's an ongoing issue in my life! Please send help because I don't know how to deal with some of them.

This particular Libra I've known for 3 years. From work. At the beginning, he did his Libra thing of lots of charming me silly. Every woman around noticed him but he only introduced himself to me.

We were never in communication (phone, email, etc) at all. But then through mutual friends, he invited me to a party at his house and immediately came to tell me how happy he is I'm there.

We had a very heated argument that same night (after some drinks). When I tried to apologise the next week he got very full-on in some sort of passionate manner that freaked me out. Following that night we didn't speak for about 3 months (we didn't see each other much either). Until on his very last day at work, we bumped into each other physically, head on. He grabbed me for a hug and said how happy he is we met.

Since then he's been coming into the workplace occasionally. Every few months or so. He always made an effort to find me (I worked in different areas of the building) and get a drink after. A few times we ran into each other in random places outside work. Completely unplanned. It always seemed to happen when I thought of something important I wanted to say to him. These coincidences turned out very weird at times.

He's mastered the art of eye contact and flirty conversation, that's for sure. But he also always remembers every single word I say (even if we're drunk) and the weirdest thing is - He told me a few times specific things he knows about me that I never told him - and I don't know who did since his colleagues I'm still in touch with are very few and they don't speak to him regularly at all. Unless he asks about me or spys on me online, I don't know what's the answer to that.

Now in case, it wasn't obvious - I like him. Despite all the freaky stuff (maybe because of it. Please don't judge me). But I made the mistake one day of asking him for professional advice - Partly because I admire him professional but partly because I was hoping it'll bring together. He didn't seem enthusiastic about it at all (he said yes and gave me his email address but never replied) and since then he's not been as friendly or as chatty. Then again, I also made the mistake of mentioning it afterwards because I did not connect the dots that this is most likely the reason for the sudden coldness.

Last we ran into each other was the first time in 6 months. I sat and felt something was staring at me - I looked up and he was quite far, but staring at me. He seemed really surprised to see me and waved but then said he was late to meet someone so he left (he did actually meet someone inside). I left before him.

Now I'm seeing him in January. I'd like to be prepared... For once. I don't want him to think it's a professional interest at all. I can't be certain if it's that or something in his life that brought on the change (though I've never seen him dating anyone) but that's how it feels to me.

Help? Advice? Are other Libras this weird?

Thank you in advance x

His map:

Sun Libra

Moon Gemini

Mercury Libra

Venus Leo

Mars Virgo

My map:

Sun Leo

Moon Scorpio

Mercury Leo

Venus Libra

Mars Capricorn

Also, I couldn't help but notice my Venus is Libra and his Venus is Leo.

Do the corresponding Venus-Sun signs mean anything?