NT, I think you're too young to define yourself as "unlucky in love." But you could become unlucky in love more permanently if this self-defeating idea becomes a rigid self-image. So start thinking of yourself as the best single girl you know how to be. For one thing, men are more attracted to a woman who shows self-confidence than to one who projects emotional need.
Your chart does show certain stressors relevant to your 7th house of marriage. Mars and the sign ruler of your 7th house cusp indicate what sort of man interests you. Mars in your chart is part of a grand cross formation, suggesting that your biggest issue is not so much finding Mr. Right as it is learning how to cope serenely with your considerable inner pressures.
Your 7th house ruler Venus conjuncts a planetoid called Chiron that shows us "where it hurts" and your Venus is also opposed by Saturn, who shows where in life we feel inadequate, and somehow not-good-enough. So you come by your feelings of "unlucky in love" through this kind of chart formation.
But keep in mind that you have some control over how you understand yourself. Chiron is the hurt that can lead us to wisdom, if we can face it openly and bravely. Saturn's good side is like a teacher or athletic coach who really wants his students to do their best. Saturn tests our patience and ability to persevere. Since Venus also rules the fine arts, you might try something like taking up drawing, music, or creative writing, but then disciplining (Saturn) yourself to improve your technique ongoingly. This exercise can beging to show you how you can take some control over seemingly difficult aspects in your chart.
Mars in the 7th shows that finding a husband is extremely important to you. But Mars can also show one's anger and aggression. The 7th is not only the "house of marriage" but "the house of open enemies." So you kind of have to learn some serenity around all of this. Above all, avoid getting irritable or blaming yourself. Your Mars and Venus also make some really nice aspects, notably to your moon, so don't give up hope, either.
