Hello again,
Relationships of any kind take work with both parties. Perhaps making more of an effort to maintain relationships/friendships would be the best route.
Even if that means apologizing, or explaining what you do mean when you feel misunderstood. You can't expect another person to just know what you mean and "get you" if you don't communicate with them. If you want anything lasting.. it's gonna take more effort on your part. Not saying you should be the only one making and effort because that would be an unhealthy dynamic. But If you do care about someone, compromise and communication is paramount. I don't mean, romantic partnerships exclusively but friendships take work as well.
In terms of Pluto transiting the 1st house.. Its not "good or bad".. it just is, like all of astrology... these transits occur for you to grow and develop according to the life path you have chosen for this life, before you incarnated into this world. I am sure you can find info on the internet concerning Pluto transit 1st house if you look it up. It might prove helpful. Pluto transiting houses are major life events, so it would be great to learn as much as you can you in essence "go with the flow".
If you are a female, I don't see why you would not be able to get married if you decided to down the road. Jupiter is well aspected as is Sun. So it shouldn't be a problem. But if there are any self esteem issues (Saturn quincunx Venus) they should be addressed and worked on before entering a long term partnership. If you are male.. serious partnership is possible but might come later in life, and the spouse/girlfriend will likely be very plutonian in nature. (i.e. intense, dramatic, perhaps even a scorpio) The only thing that would be of concern would be again that T-square. Particularly the exact Pluto opposition to Mars. From your 5th house to your 11th house. This is great if you are involved in creative arts, or sports and use the energy that way. In romantic relationships sometimes it indicates violence/volatility/aggression. So if you own this configuration...it might lend itself to tremendous drive, I've even seen people who are metal musicians with this opposition from the 5th house that are very respected. Again, as I said... this t-square is intense, there is alot of fuel to it, if you use it. And don't allow others to bring it out in your life for you, which is likely to create problems along the way.
Hope that helps.