Unfortunately the Venus Pluto square can lead to obsession and wanting to control. You need to be careful as there can be stalking, and manipulation at play especially if it breaks up.Not surprising. You have Venus square Pluto, Mars sextile Mars and Mars square Jupiter in your synastry. Sexual attraction.
There may come a time when the sexual urges will not be compatible and one wants more than the other. HOwever the finances can come together well and you can both benefit. There will come a time when it wont be secret and you can rest assured that many would have an inkling already. Pluto in the 7th is a very controlling relationship placement and especially with Scorpio involved. Saturn there usually means a break up when the transit hits.....it can be subtle power games and he may get sick of you calling the tune and turn the tables.