I like the fact you're both 2H SUN; he's got a double dose of TAU energy because of the SUN placement. You see him as a natural partner with his SUN in your 7H. Looks like his SUN may be quindecile your MOON. I'd need degrees to know. That's very obsessive.
It also seems like your stellium falls in his 8H. You're going to find it's eroticised: your prime focus will be on sexual matters. His MOON (emotional energy) goes into your 3H, however. His is routed towards communication, idea sharing, and mental pursuits.
One word of caution; he's got MERC conjunct his SUN, whereas you've got PLUTO -- and possibly MARS and MOON as well. You're more intense by nature. His MOON-NEPTUNE conjunction also points to a high sensitivity (which is likely balanced by the sign being SAG) and a tendency to be day-dreamy, and hard to pinpoint.
Your 12H VENUS square his NEP-MOON in your 3H can indicate a predisposition for misunderstandings and possible deception. You have to be VERY clear with each other. Not just 'expecting the other will get it'. They're likely to misinterpret -- and for the worse.
This is especially problematic, with VENUS as your chartruler. The greatest area in which you'll see things go south is communication. So be clear, honest, and don't leave anything to hints and gestures. They're too susceptible to be wrong. No guessing games. Honesty.