Losing interest as soon as someone likes you back usually means the attraction was attached to something other than the person: the uncertainty of the chase, the challenge of winning them, an image you built before you knew them, or a quiet belief that anyone who wants you must be settling. The feeling fades because the thing it was attached to is gone.
Desire was attached to winning. Once they are won, there is nothing left to pursue.
Where a chart tends to show it: Venus in Aries, Venus in Gemini, Life Path 5
You were attracted to who you imagined. Reciprocation brings the real person, and the picture cannot survive the contact.
Where a chart tends to show it: Venus in Pisces, Jupiter in Pisces, Sun conjunct Neptune
When part of you feels hard to love, someone loving you lowers your opinion of them.
Where a chart tends to show it: Venus conjunct Saturn, Venus square Saturn, Sun conjunct Saturn
Attraction lives comfortably at a distance. When the distance closes, the feeling retreats with it.
Where a chart tends to show it: Venus in Aquarius, Moon in Aquarius, Sun in Aquarius
One person loses interest because the game is over. Another loses interest because being wanted feels like evidence the other person has bad taste. The first needs a different source of excitement. The second needs to believe they are worth wanting.
Self Dictionary finds yours. It calculates your chart and numbers from your birth date, time, and place, weighs every signal together, and writes which of these reasons is actually yours, as plain behavior. It shows up in these areas:
See how this pattern shows up in youFor reflection, not diagnosis. The reasons above are common psychological patterns; the chart signals are where Self Dictionary looks for them. If a pattern here is causing you real distress, a therapist who works with attachment can help.