The weight of the world rests on the Dog/Virgo's shoulders, and to you it feels just fine. After all, if you don't take care of everybody, who will? Be careful not to allow your tendency to focus on the abstract ideal (like a typical Virgo) of loving all of humanity sideline your more mundane and practical efforts to help the bum on the corner. You're a born Canine worrier, but that's how you get things done, so this tendency shouldn't add to your worries.
Quiet and reserved, you're vulnerable to a more experienced lover, should your paths cross. Just don't let early disappointments leave your emotions a scored mass of twisted scar tissue -- there will be plenty of other chances to find the right person, and one bad apple doesn't necessarily mean the entire bushel has gone bad.