I can assume from your indecision that the delta in your ages is significant (20+). And that there is some significant risk (to your reputation) to becoming involved with her.
Who do you think I am? Hillary Clinton?
But seriously it's not like that.
OK...I will take your word for it.
I say that because most people are not tempted by any of the other six deadly sins. Lust is the only one that makes a man stop and ask before. The others are done without aforethought and it is only after when they have a reckoning.
If you are being tempted to one of the other six, which is a fairly complete list, then you must consider the outcome of non-participation as well as the outcome of engagement thereof. There are adverse possibilities either way. One has to identify and evaluate all of the potential outcomes.
I tend to look at life as like a game of 8-ball. You can play it shot by shot and evaluate your alternatives as you progress, or you can try to play it three or four shots down the line. The first can be successful but it depends to a degree on serendipity, the latter can leave you the winner based on a calculated plan to pocket what you can, and leave the cue for the next shooter with no shot to make or even force him to scratch.
Sometimes you must sin to prevent grievous injury to yourself from the sins of others. It depends to what degree you are willing to proceed.