Is this cute or weird? Watch
If they are a millionaire, a couple £100 wouldn’t do their wallet much damage.
If you’re worried about not being able to reciprocate the same level of value for their birthday, you could try talking to them about toning it down.
When men spend ridiculously amounts on me I immediately feel guilty - often because it makes me feel they're far more into me than I am into them. This would be especially true at the 3 month mark.