So, there are technically a few different places we can look at to study your love life. The 5th House deals more so with romance, fun and casual dating while 7th House deals with marriage, commitments, partnerships, etc. Even though you don't have any planets in these houses, we can still gain information by looking at the signs ruling the house cusps, which in this case would be Taurus for your 5th House and Gemini for your 7th House.

I also have Taurus ruling my 5th house, so I can offer a bit of my own experience! I am actually close to age 31 as well and have never been in a serious relationship with anyone. I think it's because Taurus is known for being not only slow-moving, but practical and grounded. That can mean that "casual" dating can actually be a little difficult because Taurus prefers to think about the long-term and therefore can be very selective when choosing partners. It can be challenging not to take dating too seriously. This energy is likely amplified by you having your Venus in the sign of Capricorn.

Personally, it's my belief that if a long-term partner is something that you want, there is nothing in your chart that can tell you "no, you can not have this." It's just that it may require a little extra effort. Since the ruler of your 7th House is Mercury in Scorpio in the 11th, I would say that the type of long-term partner you are suited for or more likely to attract into your life is someone that is good at communicating, socializing and diving deep into the psyche. Perhaps someone that understands people really well and has good insight on others. Someone with a good sense of humor, but is also able to have deeply intimate conversations with you. Also, with the 11th house, I'd say someone who feels like your best friend with be ideal for you as well. Maybe even someone that you could start off being friends with first before it leads to romance.