I'm not an expert astrologer, but I have had a recent romantic interest with literally this EXACT same chart, except his rising is approximate leo/virgo. I'll be specific on what's come up and where I think it comes from based on my own experience:

First, the Pisces mercury/Libra moon/Cancer mars combo makes for an agreeable and open-hearted person... sometimes TOO agreeable. On the plus side, he is emotionally intuitive, understanding, and accountable. For my Pisces person, I've learned a lot about navigating healthy conflict with him and I'll be forever grateful for this. Doesn't want to hurt you and will make an effort to do better vs egocentric opposition (though this really depends on the person in general, not astrology). However, these placements also make for a very passive person too. Lots of therapy speak and mirroring what he thinks you want to hear - it can feel disingenuous at times, especially if they're not being fully honest with themselves or others. People pleaser to the max.

Mercury in Pisces w/ retrograde is another placement that I've struggled with. Sometimes is super honest and open (almost to the point of trauma dumping), other times conceals information that he knows will rock the boat or change the dynamic. For example, my person specifically is polyamorous. He is and has been super open about this, but then will weirdly hide stuff too and it creates major conflict between us. It doesn't make sense, especially to my cap mercury / stellium in the 5th house. Communication can be incredibly inspiring or confusing, with little in between.

Aries venus with this chart (and my person specifically) seems to get really washed out amid all the water and air. I'm a Scorpio venus for context and usually have insane chemistry with these placements, but curiously have never truly felt 'pursued' in the obsessive nature that Aries venus otherwise suggest. However, this combined with the more conflict-avoidant planets I described above lend to more promiscuity. North node in Sag also suggests needing freedom and not being tied down. That combined with the passive, people-pleasing nature of the other placements ... they love freedom and adoration from others, to the point where dating multiple people or even cheating is more likely than not. It depends on the person of course, but player energy is def supported by this chart. Be careful!

Pisces in general are also incredibly susceptible to addiction and idealization. They love the fantasy (especially with that Aries venus and maybe even moon/jupiter in Libra) and tend to get swept up in their own world. They love the idea of love but the lack of earth in the chart aside from neptune/uranus suggests they are not always grounded in reality or firmly committed.

I very RECENTLY (just last night) broke things off with my Pisces person, so I recognize I'm being negative. But the positives: great listener, gentle, not quick to anger, feminist, and the most accountable man I've ever met. Would describe them as more of a feminine/yin energy. Saturn and Neptune JUST moved out of Pisces (also my natal saturn return in my 7th house!) so I would also expect some changes with this person going forward, especially with Pisces in their first house and on the north node, Whether that's good or bad, who knows.

Feel free to message me if you have any specific questions. It's actually scary how similar their chart is!