You have Uranus, Neptune and Mars in your 5th H.
Neptune rules your 7th and 8th H, these are the other two relationship houses.
Uranus rules almost all your personal planets.
Both Uranus and Neptune are platonic, meaning they avoid reality, they love something ideally but they don't love its reality.
Uranus is unstable and brings sudden love that may end as suddenly or an on-off attraction.
Neptune dosn't help in here as it idealises the other person, not seeing him for what he really is, seeing just the good in him.
5th H is the house of romance and children among others. Transit Saturn has been for some time in your 5th H. When I had transit Saturn in my 5th H I met someone who I thought I was going to have a longlasting relationship with. It lasted until T.Saturn got out of my 5th H though.
Many times people with heavy Uranian energy do not realise their need for freedom and independence until it's too late.
That is because of what I said in the begining.
They idealise something mentally but they don't like its reality.
Since we also have Neptune in here, you also idealise someone spiritually and emotionally.
It feels kind of magical. And at first it is.
Until one day you realise that the person you thought you knew is not even close to what you thought he was. And that is why Neptune is associated with disappointment and delusion.
Uranus is quicker to understand because of the pressure he feels, Neptune is way slower, it chooses to be blind.
That doesn't mean that you are doomed.
That means that you should get to know the other person for a long time and decide if he is right for you after the initial magic phase has ended.
You will know when that will happen. It will be when the magic is gone. Believe me you'll know deep inside. Usually the prince becomes a frog.
Don't rush it (Uranus). If you're meant to be together then it will last even if you don't get married. Marriage doesn't really mean nothing.
You've known him for 6 months which is way too early for deciding something so important.
Have you lived with him in the same house?
If not I highly advise you to do it. If you live under the same roof 24/7 for about 3-4 years without major problems then he's good for you.
If I was you I would wait even if I didn't have Uranian and Neptunian energy in my chart.
Astrology aside, there is no reason to rush things. On the contrary there are many reasons to take it slow.
Many people are good at lying, hiding things. Many when in love show only their good side because of being in that nice floaty state.. So because of feeling in love and having a good, elevated mood they naturally show their best side.
But I garantee it won't last and reality will hit you no matter what. That reality may be nice, it doesn't have to be ugly but it's important to see it before it's too late.
Unconventional relationships are an Uranian thing. So he might be a foreign, a weirdo, someone unavailable in anyway (meaning long-distance relationship, someone who is cold or uninterested emotionally, someone who is already married or in a relationship with another etc).
It might be smth like sleeping in different bedrooms. Having lots of space, the man may be the one to cook and clean the house while the woman the one to bring the money. There are many ways in which a relationahip can be unconvetional and it needs to be because when it stops being is when the problems begin and the relationship feels suffocating.
I wouldn't care a lot if you didn't have Aqua Venus tbh. Uranus in 5th H by itself is not as difficult as Uranus in 7th H. The 5th H is the first stage of the relationship. But because it also indicates children you might feel very pressured after having kids, it's a very common thing.
Basically be very careful and patient before you take such important decisions. You don't have to do things just because majority does it or because your parents/relatives/friends are pressuring you in one way or another.
You can tell him that you're in love with him but you take marriage very seriously and you want to get to know him really well before you marry him.
If he insists then you already have your answer. He is not for you. Someone who really wants you doesn't care if you marry him later as long as he has you in his life.
I forgot to mention Mars in your 5th H is very impulsive. So basically don't rush things because of the excitement you have.
It's better being late than being sorry.
I see your Moon/Saturn, Moon/Pluto, Mercury/Saturn,
Mercury/Pluto hard aspects which can kind of help but that Aqua Venus and Uranus in 5th H, I have seen them working their "magic" even in exclusively earthy heavy Saturnian types.