Marcel knows that his love for Albertine was not foreordained.
…which now was for ever impossible and yet was indispensable to me. Indispensable without perhaps having been in itself and at the outset something necessary, since I should not have known Albertine had I not read in an archaeological treatise a description of the church at Balbec, had not Swann, by telling me that this church was almost Persian, directed my taste to the Byzantine Norman, had not a financial syndicate, by erecting at Balbec a hygienic and comfortable hotel, made my parents decide to grant my wish and send me to Balbec. To be sure, in that Balbec so long desired, I had not found the Persian church of my dreams, nor the eternal mists. (V,675)
But that is not to say that the character of his love was not determined in advance. It was imprinted on him as a child by his mother.
Who would have told me at Combray, when I lay waiting for my mother’s good-night with so heavy a heart, that those anxieties would be healed, and would then break out again one day, not for my mother, but for a girl who would at first be no more, against the horizon of the sea, than a flower upon which my eyes would daily be invited to gaze, but a thinking flower in whose mind I was so childishly anxious to occupy a prominent place that I was distressed by her not being aware that I knew Mme de Villeparisis? Yes, it was for the good-night kiss of such an unknown girl that, in years to come, I was to suffer as intensely as I had suffered as a child when my mother did not come up to my room. (V,676)