What about my love life? Venus in 9th house in my natal 10th house what does mean? A possible affair in work/university maybe?
Maybe, but first I'd look at Venus in a broader context. Venus is your natal chart ruler, and in this SR (assuming you used the correct reference place to draw your SR chart; if you didn't, then that would need to be changed), it rules your seventh and twelfth houses. The chart ruler is rather like the ascendant--a representative of you--moved to whatever house and sign it's in.
I also note that there are two retrogrades going on regarding crucial points in your solar return chart. Jupiter retrograde at the SR AC, and the traditional ruler for your SR chart is Mars, which will be stationing retrograde just past your natal IC when you have your solar return. To my mind, that suggests that, at the time of your solar return, you will be facing some sort of do-over. The involvement of Jupiter, ninth house, and knowing that you're currently focused on your higher education, makes me think it will probably be something related to your studies.
Maybe you'll have to retake a class. If you're on track to graduate this year or next, maybe there will be some delay in that. Or maybe, since you say you still haven't figured out your career, maybe you'll decide over the next six months that you want something different from what you've been on track for, and that will mean going back and meeting some new requirements.
When you say "affair," do you mean a casual affair, or are you hoping to find someone for a longterm relationship? If you're thinking of an actual partner, it looks like some sort of do over here, too. Mars rules your natal DC, and will be retrograding in your natal fourth and third houses, SR third... I think, if you do find a partner, it will be someone from back home, in some sense. Maybe a childhood friend you reconnect with, or, if this possibility exists for you, an ex you get back together with. Maybe a neighbor, a friend of a family member, or a family member of a friend. Retrograde carries the meaning of going back, returning... so this would be some kind of return. Any partner you find under these conditions is more likely to be someone you already know, if not necessarily well, than someone you're meeting for the first time.
Between one and four months after your solar return, Mercury and Venus will also retrograde over sensitive areas of your chart. If you're starting a new relationship then, that adds even more likelihood that it will be with someone you're returning to, in some sense.
If you're thinking of a casual affair, that would be fifth house. SR and your natal chart both place that in Pisces. Both its modern ruler and its traditional one are retrograde in your SR, so there's agreement there, too. With the added suggestion of a Neptune/Pisces glamour, illusion, perhaps something that looks better than it is (but feels good while it lasts).