But When?

The notion of time, I think, has been largely neglected by many philosophers. Not as a topic in itself, for as that they are actually quite fond of it. Taking seriously the notion of time, I say, requires explaining all other notions in temporal terms. But philosophers have the exact opposite tendency - as they are fans of abstractions, and rightfully so in my humble opinion, they tend to search for eternal 'truths', 'principles' and time-independent concepts. In fact, in search for an understanding of a concept they will define it in non-temporal terms and then explore its implications, inner structures, constrains and so forth.
That has a serious basis in human psychology and intellectual ability. People are not very interested in temporary states, they want to know things as they really are, to borrow a phrase from one smart man - in themselves. And the way things really are is conceived to be what they always are and not what they are for a given period of time.
Of course this is an absurdity - human beings are, themselves, temporary. As as they realize and internalize this simple truism they sometimes lose interest in the 'truths' or 'principles' and focus instead of achieving short term goals of a more 'earthly' nature. Nonetheless, they still acknowledge the relationship between truth and eternity and appreciate it. People are concerned with questions like 'what will be?" and are consoled with answers of the type "everything is going to be alright" though they lack the most important part of the answer - when will be it alright?
Consider Love. Much has been said and written about love - by philosophers, poets, writers and people from every walk of life. Many of the answers to the questions 'what is love?', including very serious inquiries, refer to it as an unchanging eternal concept. Marriage, relationships, friendship - are considered to have ups and downs, hard parts and nice parts. Love is a divine gift or an human emotion - but it is usually defined as something in itself that is unchanging and pure.
It seems to me, however, that the exploration of the concept of love can benefit greatly from an explanation in temporal terms for I think our lives and the world, at least as we perceive it, are inherently temporal. Firstly, it seems to me that Love is first and foremost a matter of moments. It 'attacks' on certain moments, when it emerges for the first time for sure but also later - it grabs hold at particular points in time, felt strongly at some moments. It is not always the same - it changes from time to time and you may feel it differently. It can be really great and then we want it to stay that way but it never does. Does that mean that Love has gone? sometimes, but not necessarily. For love to be a great thing all in all, it doesn't have to to always be the same type of feeling, if it is a feeling.
The point is that the exploration of many concepts can benefit from explanation in temporal terms. That means that someone's gotta do it.
But when?