The most likely reason you're seeing the number 11.11 and the number 1.11 as often as you do is because the number 11, and perhaps also the number 1:

• has a special significance for you,
• was seen at a special moment that made you remember seeing it, or
• was notable because of the composition of the number itself (1111).

Seeing the numbers might be related to the time you started dating your partner, or it might not.

You see many numbers during the course of a day. Yet, 1.11 and 11.11 are the ones you remember seeing. It's most likely because somehow your mind is sensitized to those numbers. You see it; you remember it. Other numbers aren't remembered.

Why People See Certain Numbers All the Time talks about that.

Traditional numerology calculations don't determine the meaning of why a person sees certain numbers. But numerology can help with the meaning of the numbers themselves.

Numbers represent numerology energy. Links to the descriptions of the numbers you're seeing repeatedly are in the first paragraph of this response.

In your numerology chart, the number 11 will be your pinnacle number in about three years. And the number 1 is one of your current challenge numbers. But I don't think those two positions would have enough influence to make you remember seeing the numbers as you described.