Python Split a String but Keep The Matched String

Question

Consider a string in a list that needs to be parsed.

Example

['Service Request',
'Please view this in here',
'Your Service:example Request Date and Time: 4/7/2022 8:20:54 PMService: Sub Service:']

Output (objective)

['Service Request',
'Please view this in here',
'Your Service:example',
'Request Date and Time: 4/7/2022 8:20:54 PM',
'Service: ',
'Sub Service:']

The issue is that if I use the code below, the matched string isn't included in the list. However, the goal is to preserve the matched string.

for idx, te in enumerate(text):
    if any(x in te for x in matches_req):
        text[idx] = re.split('Your Service:|Request Date and Time:|Service:|Sub Service:', te)
        
def flatten(lst):
    for x in lst:
        if isinstance(x, list):
            yield from flatten(x)
        else:
            yield x

text = list(flatten(text))

Output at the moment (wrong)

['Service Request',
'Please view this in here',
'example,
'4/7/2022 8:20:54 PM']