oooh, a challange! lol Hi xiyang, lets see if i can help out a little.

I see rhutobell o was also very helpful and i know the others will be also. Here's my interpretation!
shirley's condition: i see that shirley is currentl ignoring the advice from her inner spirit and guides and concentrating more on the physical and material benefits of such a union. She is not thinking of love but of lust and what they can have together materially, bad move
Andy , on the other hand, feels as a father figure towards shirley. He is protective over her and feels the love as a father for his daughter not as a husband for his wife. (a little intuition here.) he may not even realize it.
The wheel of fortune reversed shows something has come up to push their decision to marry, an outside influence of some kind. Could be the fear of losing one another, so they want a commitment right away, or a marriage of convenience, like certain benefits financially if they were married. I don't see it being because of love.
the seven of wands reversed shows them in competition with each other! I don't see this marriage lasting if it happens because it is for all the wrong reasons.
samantha
p.s. this was a tough one! any other help out there?