I cannot answer you in vedic terms, but maybe it is because the first one was not of any importance and illegitimate as you said. So the chart might show the real life-long partner. But are you talking about the ruler of 7th ? That does describe "relationships" but not only one partner.
I just looked into your progressions. Pr. Venus is coming to your IC, that means you are about to meet someone of importance to you. In a few years from now, Pr. Sun will conjunct natal Moon and pr. ASC will conjunct natal Venus and pr. Venus will conjunct natal Mars. The pr. MC/IC axis is now coming to your natal nodes. All those are huge indicators of a love of impact. But I must note that right now pr. Mars can be disturbing your life as it is close to pr. IC and the S.node.
I know this is not vedic - but I just wanted to tell you my notes.
Thank you though Arena! I study my own brand of astrology anyhow, so I will study so I understand what you have said.
I was aware that a major happening was coming down the line for me next year from reading both my chart and studying palmistry. I will be married in 2 years or less, and it will be a love marriage.