Is the door open right now? (the dasha)
Timing is everything here. If your current period is reactivating the 7th house or Venus, the channel between you is genuinely warmer and a message is more likely to reopen something real. If you are in a closing or detachment period, the same text usually meets silence or reopens a wound. The chart reads which of these you are actually in. The difference between a good instinct and a painful one.
Rahu pull vs. a real opening
A restless, almost compulsive urge to contact an ex, especially late at night, is often Rahu animating an old pattern: the craving for the familiar high, not a sign the relationship should resume. A real opening feels steadier and is supported by the timing in both charts. Knowing whether you are feeling Rahu or a genuine window stops you from mistaking intensity for meaning.
Will it help or set you back?
The honest reading weighs your chart and theirs: does reaching out move things forward, or does it restart a loop your chart is trying to close? Sometimes the kindest answer the chart gives is “not yet”. Not because it is hopeless, but because the timing would cost you the ground you have gained. Seeing that clearly is often more useful than the reply itself.