Yvonne – I'm still unaware if you two are cohabitating as well – that has an impact.
That said, I'm glad you're seeing where some of your behaviour has added pressure to the situation.
And it is actually a great discovery that he still feels strongly about you, shows affection and sayd he loves you – those are strong indicators the two of you have a good connection together.
What he is likely to be thinking is the added pressure and stress you past line of questioning has placed on him. Think of it as him thinking the fun has evaporated. Too much serious talk now and the casual nature of your early times has gone.
One strategy might be to admit to him where you yourself have gone too heavy and suggest you both try dating again. Shows you're serious. Gives him the option to lighten up and make a choice on direction.