Saṃvega or something else? Integrating sammuti sacca with paramattha sacca I've dropped out of three stable relationships back to back in 4 years, even though the women involved were very much in love with me, and were in quite a lot of misery when I left.

Rather than get the motivation to put my back into making things work by relocating or changing my life or whatever was required, each time, I took it to the point where firm commitment was needed and then backed out because I didn't see why it is worth it.

A voice inevitably rings in my head that such effort is better expended in meditation and a life of service and purity rather than on silly selfish samsaric satisfaction. Anyway, I'd also see exactly how the relationship would fail a few years down the line, or where the cracks would appear and lose my energy.

I have had at least one very stable shift in my consciousness since at least 3 years now, which has reduced my mental/emotional chatter to nearly 0-5% of what it was, and I don't get attached to anything including partners the same way anymore. I've been almost coldly unemotional about victory or loss in love and death, and most other things that would make people ride emotional highs and lows. 

I don't really care to define this change as an awakening or as a kensho/satori or whatever - I think these are useless definitions that don't matter -- still, it is a change whose vast effects on my life I can't deny.

I can feel an all encompassing love and compassion for everyone yet a detachment from everyone. Which kind of complicates romantic life - do I really love my current partner any more than the rest of the world including exes etc. Confiding these feelings with the partner has never helped of course. Worse, they would very soon sense that I am not really bound down by anything, and resulting insecurity would lead to conflict.

Sure, I can still get angry but it is a powerless anger, and if I reflect on the anger or whatever mental feeling I have even for a moment, it will vanish instantly. If I choose to, I can always see the pure heart in anyone and fall in love.

There was a period of intense thoughtless equanimity in my life, about 6-8 months after the awakening that lasted for several weeks. My mind had a vastness that left me in awe. At this point a bomb could have exploded next to me, and I would have observed it without a flutter, as if it was very normal. There were several other brilliant characteristics to this period, but the most important was a profound sense of balance I had between the ultimate truth and conventional truth. I could perfectly balance my inner life and my outer life without conflict no matter how heavy the samsaric context. There was an ever present wisdom that enabled this.

I didn't really care what I did with my life, there was no "I" - I did whatever was appropriate, I reacted to life perfectly yet effortlessly, as if I wasn't there, life just flowed and I with it exercising only the gentlest of effort to produce the wisest action possible. 

This seemed like a stable reality until it ended, and since then I've really yoyo-ed between ultimate truth and conventional truth. One moment wanting a relationship and the next day or week wanting to be a monk.

My ability to lapse into universal love means I have even strayed to infidelity, due to deeply loving several people, and continuing to love to this moment everyone who has entered my life.

Without the perfect wisdom that I had for those few weeks relationships feel like an accident waiting to happen, so I've now sworn off all relationships until I figure out what exactly to do.

Any ideas?
Philosophical thoughts can come to the mind at anytime. You shouldn't get too excited about them as that can lead to complacency, ego and false self assessments. Simply note them rising and passing away. If you are not enlightened, you are not safe no matter how deep you feel or think.

Don't focus much on love. Usually Patikulamanasikara meditation is recommended to people with lust issues. The details are in the Visuddhimagga. You can also do Silanussati and try to perfect your virtue. One suggestion is to stay in a forest monastery for a while, stay away from women and work on taming the mind.