The line in between heart and head line ?

Hi, I've red through the topics but I still couldn't find what line is this. Its a line that branches down from the heart line and right above the head line & lines at the small finger to the middle finger, my heart line indicates pure love ; while the head line is curved down. What line is this, I can't tell is it a Y at the end of this line of is it just a branch from those lines.