That’s some deep Master Yoda stuff right there bro.
For me the problem with sexual love or what we would call relationships that eventually become long term or evolve into marriage, is that people build up and wall off these relationships. They do things that strengthen the attachment and it almost becomes sort of an obsessive madness where one or both partners are constantly doing things to reassure the other out of fear of losing the relationship.
It's a self absorbed madness that millions of people are living out all across the world, but it's probably worse in societies obsessed with resource accumulation in order to squelch that nagging feeling in the back of their mind that every relationship has to end eventually.
Life it would seem to me is a mental skill, much more than a physical skill and yet modern day relationships emphasis the physical and material aspects and seem to look down on anyone that starts to ask questions and points out problems.
So while people talk about unconditional love, there doesn't seem to be an unconditional relationship. All relationships are built on conditions a long list of conditions that will be expected to produce more pleasure than pain or at least minimal amounts of frustration or mental fatigue.
The thing is once you start meditating and detaching you no longer care about expectations. It's not that you don't care for the other person, it's just that you're noticing the things that are unnecessary that another person who hasn't had a chance to quite their mind will still be obsessed with.
This is probably why ultimately anyone that starts down this path and goes into it is gonna end up walking away from a lot of things and ultimately romantic relationships as well because you simply can't try to keep someone else happy when the meditator is gonna see much of this activity as feeding the partners addictions.
The Zen guys seem to have a different take, because they don't attach meaning to activity and words don't do a very good job of describing reality, they don't have to attach a particular meaning to any given activity(non-dualism, everything connected to each other). The only problem with this is that it allows for both good and evil without discrimination and that's dangerous, but also liberating because a person no longer carries their past around with them, so they are able to carry out an activity, but leave that activity behind and not let it bother them with a guilt free future.