I agree with Greycats's point-of-view pretty much. The fact is, life isn't always about love alone, as many poets have romantisized(sp?) over the ages. Actual romance isn't always about
Count Orsino going Four of Cups over his Lady Olivia, because very few of us in reality are fortunate enough to have so much cash, that we could fulfill grand promises to our loved ones.
It is rather "grown-up" to take the Earthy matters into consideration, as the suit of Pentacles is apt to remind us.
Here, I shall post one of the past readings I'd recorded into my tarot journal. This was a reading for my friend and her boyfriend, using Darkiscross's Waterfall spread (with minor revisions on my part, though credit goes to him).
THE PAST
His feelings for her: The Magician
Her feelings for him: Five of Swords
THE PRESENT
His feelings for her: Four of Cups
Her feelings for him: Seven of Cups
THE FUTURE
His feelings for her: Seven of Pents
Her feelings for him: Ten of Pents
What helps the relationship: Two of Swords
Core of the relationship: Ten of Swords
What destroys the relationship: Nine of Swords
Advice: Six of Wands
Outcome: Ace of Wands
*Six of Wands > Ace of Wands = Advice is to shift the relationship from a Swords type to a Wands type.
* Four of Cups + Seven of Cups = Currently, feelings are the emotional type. While He broods, the other fantasizes, merely. Not solid.
* Seven of Pents + Ten of Pents = Feelings move towards to "regular" type, in the process of losing passion, as some relationships do.
* Seven of Pents = Dreams shall develop. Though she has lost passion, as a woman, She would still like more. (IE, marrying Him, having children)
* Ten of Pents = In response, He shall think of settling down.
* Two of Swords + Nine of Swords = Simply worrying helps nothing, though an argument, a spark, would relight the relationship. Communication is sorely needed.
* Ten of Swords = This relationship suffers stagnation that can't easily be cured. A line has been crossed somewhere. Too many things hidden deep beneath. One wants to make a husband of the other, and the other wants to make a wife of the first. I think it's actually the hopes of a secure home life that's prevented the relationship disintegrating.
* Six of Wands = The advice: Recreation, a productive and energtic time. Anything to break this stagnation.
* Ace of Wands = ... and such shall lead to the beginning of all passions. ^_^
As I have read, cards can pertain to "love", even if they're not from the suit of Cups. Hope I helped.