Jupiter's Libra ingress happens on September 9th. The planet of optimism and faith, in the sign of relationships and social grace, will whip up a frothy confection of social ideals. Libra likes everything to be pretty, and Jupiter's shot of expansion will probably create some exaggerated displays of romance and rosy appearances. There are benefits to this - celebrations, increased sociability, marriage proposals and fun with the social dance. Jupiter in an Air sign can buoy you up and up, which will be a nice antidote to heavy times.
Jupiter's tendency to exaggerate can also tip the Libra balance, so it will be easy to overdo the people-pleasing bit. If there are real problems in a relationship, you may gloss over them. Fine for this transit, but watch out when Jupiter enters Scorpio. The point is, this should be an enjoyable transit, but don't ignore any simmering issues. This is prime time to address the difficult stuff, because compromise will be encouraged.
Fairness, ethics and honesty will be big deals. But whether these things are enhanced or falsified is another story. Jupiter expands everything, so if there is potential for half-truths, shallowness, denial and philandering, that could be a problem. It may not be visible right away, because Jupiter will crank up Libra's gloss, so you're blinded by the shine of the "perfect" relationship or partner. But if you're starting off with honesty and the highest intentions, Jupiter will make it easy for you. Easy to be fair and impartial. Easy to see where the other person is coming from.
Use this time to increase your objective awareness. How do your wants line up with your partner/potential partner? How does your behaviour impact others? Jupiter can give you perspective, allowing you to step back from what you've been projecting (or what's been projected on to you). You could gain a whole new appreciation of the social dance, while having a bit of fun.
A few words about Jupiter's "promises": there are none. It's become almost taboo to suggest that a Jupiter transit might bring something good, because some people experience nothing, or they get hit with ugly events. Then they read about Jupiter's positives, and they feel betrayed.
There are two things to be aware of:
1) Jupiter brings potential, not guarantees. This transit can bring social (Libra) growth and exploration (Jupiter). Big relationships. Expansion of an existing relationship. If you're stuck in a negative mindset, you will miss this potential. If you refuse to change anything about the way you relate to others, you will miss this potential.
2) Jupiter can expand negative issues. Sorry - it happens. If something blows up during a Jupiter transit, it's not because you were cheated. It's just Jupiter. And, there are always other transits in play.
Jupiter will leave Libra for Scorpio on October 10th, 2017.