"The irony is, I really enjoyed the original post. Upon reflection, I believe there is something to be learnt there." -- Care to expand on that a tad?
The way I see the world, what parades as 'love' between two people is actually 'attachment', that is, a selfish modification of love -- love of oneself.
Thence arises the two of the three dichotomies mentioned: commitment/exclusivity and love/ownership (although I would argue that perhaps love is used here in the context of a feeling rather than the more metaphysical 'recognition of oneness (identity) with another' that I prefer).
The apparent jarring presence of sex/intimacy (which you noticed) is what propelled me to ask the question of the OP originally.
Regarding vomiting - I'm not entirely convinced it's always from a complete lack of thinking on the poster's part. I feel like people are genuinely afraid of putting themselves out there, though they want to, and so try to be cryptic and vague. Perhaps that's from a lack of introspection, but I don't think that's always the case.
By making a post you are 'putting yourself out there'. If you are not confident about the idea that that post represents, then why are you making it public in the first place?