Hi inkedaxiela!
I almost had the same case as yours when I applied for Schengen Visa. I have known my boyfriend for six months when he visited me in my country. Then officially we became a couple. After 2 months, we applied for Residence Permit and since it will take 14 to 18 months for the decision, we applied for Schengen Visa. But since the Swedish Embassy and Consulate in my country don't handle Schengen Visas, we submitted it to the Norwegian Embassy.
I had a really good work in my country. I had good salary with good benefits and privileges. I was also paying for my own house. I was financially independent since I graduated. What we did wrong was to strongly and over-confidently believe that my Schengen Visa would be granted. And since I had a senior position at work, I couldn't file a 3-month leave. So i opted for resignation. Which was a very bad idea. The Norwegian Embassy took it against me. They also didn't believe that our relationship was established enough. It was frustrating but it was a lesson learned. So i want to share it with you. Nonetheless, my visitor's permit got approved and I was able to live with my partner for 6 months. Now after 18 months of waiting, my residence permit has been granted as well.
In addition, getting married too fast is undeniably questionable for the authorities. Because even though both of you are genuinely in /!\ I AM A STUPID SPAMMER /!\ is another thing and that is way bigger than being in love. I and my partner, despite all the advices that we should get married to get the visa faster, refused to do so. Why?
1. This is more personal - We both believe it is too soon to get married. Even though we were genuinely in love, we still don't think that marriage should be in an early stage of our relationship. We both believed and we still do, that we need to be together long enough to know for sure that we are both ready to get married.
2. This is more rational - although we care less about what others would think, we didn't want the authorities to question our relationship. Proving your sincerity to someone stranger (authorities - and/or someone outside your relationship) is hard enough. Getting married soon is like adding another item in the cart which they can question.
Before I left my country, I had to attend a seminar conducted by the government. There were 4 women who got married a month after they met their partners. The gov't didnt release legal documents for them and they were even held at the office. Probably to be interrogated. When i witnessed that scenario, I felt it's a good thing that the gov't is strict in assessing applicants. It is not about discrimination or poor judgement, but to protect the women against prostitution and human and drug trafficking.