Healthy discussions and assurance are basics in a relationship. There's no relationship without doubts and issues, because there is nothing called as 'Perfect'!
When you are convinced with the answer, you finally know what you want and where you want to be. But if you are influenced by your partner, you will realize the same within no time because once your partner is out of sight in the next moment, you will start having doubts yet again!
A person who has been so close to you all the while will obviously hold a greater standpoint in your subconscious mind, so you do not have to worry about being the weaker person there. You just need to know the kind of reaction it has left within you and make a judgement all by yourself in the end!