grammaticality - "Feel committed to [gerund/infinitive]"

Does "feel committed to" require an infinitive or gerund complement?

For example, which of the following is grammatical?

• I feel committed to following up on that.


• I feel committed to follow up on that.

Answer

"I feel committed to following up on that." Or likewise "I am committed to following up on that", etc.

But as a verb, rather than an adjective:

"I have committed to follow up on that." or "I committed to follow up on that", etc.